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Hivyo ni furaha yangu kubwa
kuwakaribisha nyote hapa leo

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00:00:17,970 --> 00:00:20,600
kwa hotuba ya kwanza
ya, vizuri, Introduction

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00:00:20,600 --> 00:00:22,510
kwa Computing na Programming.

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Pia inajulikana kama CS50 au vizuri, CPSC
100, rasmi hapa katika Yale.

5
00:00:29,110 --> 00:00:34,820
>> Hivyo tunaweza si kuwa na msisimko zaidi
kuwakaribisha nyote hapa.

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00:00:34,820 --> 00:00:36,620
Jina langu ni Patrick Rebeschini.

7
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Mimi nina kichwa mwalimu kwa ajili ya darasa.

8
00:00:39,180 --> 00:00:43,600
Mimi hapa anayewakilisha kundi
ya wanachama wapatao 60 wafanyakazi

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00:00:43,600 --> 00:00:46,380
ambayo kazi na wewe
katika muhula.

10
00:00:46,380 --> 00:00:49,040
Idadi hii ni karibu 60 ya kwetu.

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Hata hivyo pamoja ajabu
kiwango cha ahadi

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kwamba sisi kuweka katika hii
darasa, hufanya CS50 darasa

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katika Chuo Kikuu cha Yale ambayo inatoa
kiwango cha kubwa ya msaada

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nyote.

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00:01:01,960 --> 00:01:05,940
Na sisi inaweza kuwa zaidi ya kujivunia
sadaka darasa hili hapa tena.

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00:01:05,940 --> 00:01:11,380
>> Kwa kweli, kama wewe hivi karibuni uzoefu,
CS50 ni zaidi ya darasa.

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Ni jumuiya.

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Na utakuwa na sehemu
karibuni ya jamii hii.

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Huu ni mwaka wa pili kwamba
Yale ni sadaka darasa hili.

20
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Sisi ni kujenga juu ya uliokithiri
mafanikio ya mwaka jana, ambapo

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kwa mara ya kwanza,
hapa katika chuo kikuu hii,

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shahada ya kwanza msaidizi wa kujifunza
yalichukuliwa madarasani.

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Yote ilianza na
darasa hili mwaka jana.

24
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>> Hivyo kama unajua, daraja la yanayofundishwa
pamoja na Chuo Kikuu cha Harvard.

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Kufundisha kozi hii
sisi ni relying-- tunaweza

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00:01:39,920 --> 00:01:44,850
hesabu ya utaalamu mkubwa wa
David Malan na timu Harvard.

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Basi Daudi imekuwa mafundisho
CS50 kwa pamoja, miaka 10 sasa.

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Na kila mwaka amekuwa
kusukuma mipaka

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na kuboresha uzoefu darasani.

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Tena, sisi inaweza kuwa zaidi ya furaha kwa
kuendelea ushirikiano huu pamoja nao.

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>> Kwa kweli, moja ya
kuvutia zaidi sehemu,

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Nitasema mbio darasa hili sasa,
wote katika Harvard na hapa katika Yale,

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ni kweli ajabu
msalaba-mbolea

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wa mawazo, lengo la kuboresha
kujifunza uzoefu na wewe wote.

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Hivyo kama matokeo ya hili kina
ushirikiano kati ya wawili

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chuo kikuu, CS50 ni fahari
kutangaza toleo la mwezi mwaka huu

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pamoja na mabadiliko liko.

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David wote kutuambia kuhusu wao sasa.

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Hivyo please-- kiumbe hiki
Alisema, tafadhali kujiunga na mimi

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na kuwakaribisha kwa kutoa
duru kubwa ya applause

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kuwakaribisha David na
Harvard timu hapa katika Yale.

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>> [Makofi]

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>> DAVID Malan: Asante.

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Shukrani.

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00:02:43,746 --> 00:02:46,550

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Hii ni CS50, Harvard Chuo Kikuu cha
na kuanzishwa kwa Chuo Kikuu cha Yale ya

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kwa akili
makampuni ya sayansi ya kompyuta

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na sanaa ya programu.

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Na nini maana ni kwamba bila shaka hii
hatimaye, ni kuhusu utatuzi wa matatizo.

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00:02:59,640 --> 00:03:01,849
Hakika wengi wenu huenda
wamejitokeza ya shule ya sekondari

52
00:03:01,849 --> 00:03:04,931
au kuwa alitumia kipindi cha miaka michache
anashangaa baadhi ya rafiki yako

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00:03:04,931 --> 00:03:06,380
ilivyokuwa mwaka jana au katika madarasa mengine.

54
00:03:06,380 --> 00:03:08,449
Na bado, ukweli
ni, bila kujali sisi

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kufanya mwisho wa siku katika darasa hili,
itakuja kuwa juu ya kutatua matatizo.

56
00:03:11,740 --> 00:03:14,320
>> Na kama vile, labda kuchukua
baadhi reassurance kwa kweli

57
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kuwa 73% ya wanafunzi kuwa
kuchukua darasa hili, wote hapa

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katika Yale kama vile katika Harvard,
hawajawahi kuchukuliwa darasa CS kabla.

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Hivyo kama wewe ni kukaa hapa katika
watazamaji leo wanashangaa

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kwa nini wewe ni kukaa hapa
katika watazamaji leo,

61
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au labda wewe tu na kufuatiwa
pamoja na baadhi ya marafiki,

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au labda wewe tumekuwa
kidogo curious kama yale

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sayansi ya kompyuta na
programu ni, kutambua

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kwamba wengi wa wanafunzi wako kwa
kushoto na kulia ya wewe

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ni mengi sana katika idadi ya watu kwamba huo.

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>> Na hakika, kama sisi kuangalia
takwimu mwaka jana

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ndani ya mwanafunzi mwili wa CS50, wote
hapa na katika Harvard, 58% ya wanafunzi

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hujiita chini ya starehe.

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9% ni vizuri zaidi.

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Na kisha 33% ni mahali fulani katika kati.

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Na hakuna ufafanuzi rasmi
ya nini ndoo maana yake.

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You aina ya kujua uko
chini ya starehe kama wewe ni.

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Wewe ni hisia kidogo uneasy
na labda kuwa darasani.

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Wewe ni uhakika kabisa kama kompyuta
sayansi darasa ni hatimaye kwa ajili yenu,

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na kutambua kwamba wewe ni
katika kampuni nzuri sana.

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Na hakika grading,
na tathmini,

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na maoni, na yote hayo
msaada muundo katika darasa

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ni hatimaye sana mtu mmoja mmoja.

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Zaidi kuliko yoyote zaidi
darasani wengine kwa kubuni.

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Na hakika, kile hatimaye
mambo katika darasa hili si

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sana ambapo mwisho
up jamaa na wengine,

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lakini ambapo, katika wiki 11 au iliyopita,
na jamaa na mwenyewe katika wiki

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0 hapa kwanza yetu.

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Hivyo hiyo ina maana gani?

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Naam, hii ina maana ya wale 73% ya
wanafunzi mwaka jana ambalo halikuwa limewahi

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darasani CS kabla, na
kuanza muhula wao wa

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walikuwa dabbling katika lugha
aitwaye Scratch, ambayo sisi wenyewe

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utaona hapa leo.

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Na ifikapo mwishoni mwa
muhula alikuwa nao wamekwenda

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00:04:32,190 --> 00:04:34,700
kupitia orodha hii nzima ya changamoto.

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Kuanzia na lugha inayoitwa c.

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Kutekeleza, nini
katika mtazamo wa kwanza, kwenda

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kuwa kidogo ya changamoto kwa
baadhi, lakini haki kuufurahisha mara moja

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kupata Super Mario bouncing
juu na chini ya piramidi

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kutekelezwa, angalau, na tu
kitu kinachoitwa ASCII sanaa.

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Utekelezaji wa year-- mwisho nini
wanafunzi mwaka jana basi

97
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je baada ya kuwa alikuwa kutekeleza yao
mwenyewe Kaisari cipher na Vigenere cipher.

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Hivyo algorithms encryption
na ambayo unaweza

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kinyang'anyiro habari na kisha unscramble
Maelezo kutuma ujumbe wa siri.

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mchezo wa 15.

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Kama unakumbuka kutoka
utoto au upendeleo fulani chama,

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kwamba plastiki mchezo kidogo ambapo hoja
idadi juu, chini, kushoto na kulia

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kujaribu kupata yao ili,
kweli kutekeleza mchezo kwamba

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na kutatua mantiki required huko.

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Na kisha sisi dabbled katika
forensics mwaka jana.

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>> Hivyo kufikia katikati ya muhula,
wanafunzi ambaye hakuwahi

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kutumika keyboards yao
kwa lengo hili kabla,

108
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walikuwa kuandika programu
kupona, hivyo kusema,

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JPEGs au picha
kwamba tulikuwa ajali

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ilifutwa kutoka digital
kadi ya kumbukumbu kutoka kwa kamera.

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Kurejesha ujumbe siri
kutoka ndani ya picha bitmap,

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na aina nyingine kama
ya graphics vile vile.

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>> Sisi basi zilianza kwa kutoa
darasa zima kamusi.

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Tu faili kweli kubwa maandishi
na 150,000 maneno ya Kiingereza.

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Na kila mtu alikuwa changamoto
kwa namna fulani kusoma, hivyo kusema,

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maneno hayo katika kumbukumbu.

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Katika kumbukumbu ya kompyuta.

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Na kisha kujibu maswali
ya fomu, hii si kauli?

119
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Je, hii ni neno?

120
00:05:44,934 --> 00:05:45,580
Je, hii ni neno?

121
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Kweli tu kutekeleza
Spell kusahihisha.

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Na kisha changamoto kila
wengine na board-- kubwa

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bodi ya kiongozi kuona ambaye angeweza
kutumia kiasi mdogo wa kumbukumbu,

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katika kiasi angalau ya muda wa
kweli Spell kuangalia nyaraka kubwa.

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>> Sisi zilianza kutoka kisha kwa
utekelezaji wa mtandao ndio wenyewe server.

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Hivyo si kufanya kurasa za mtandao katika lugha
kama HTML na CSS, kama wewe ni ukoo.

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Lakini kwa kweli utekelezaji
server kwamba

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anasikiliza kwenye mtandao
kwa maombi kutoka browsers

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na kisha kukabiliana na maombi hayo.

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Kisha kutekeleza yetu wenyewe
e-biashara kama tovuti, ambapo

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wanafunzi wanaweza kununua na kuuza hisa.

132
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Kuchora katika muda karibu halisi
quotes hisa kutoka Yahoo Fedha.

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Na kuruhusu wanafunzi kuona
jinsi kwingineko yao yanaendelea.

134
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Na kisha hatimaye mash up
Habari za Google na Google

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Maps ambapo wanafunzi
na mrefu kwa masharti mwisho

136
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alikuwa na uwezo wa click, na
pande zote, na search kwenye ramani Google.

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Na kisha kuona yote ya
makala habari kwamba

138
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ni kupakana na maeneo hayo hasa.

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Hivyo kweli kwenda kutoka sifuri hadi 60.

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>> Na njiani kuwa kile tulikuwa
mwaka jana kuitwa, hacker nyongeza.

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Hiyo kuongeza bar
zaidi kwa wale wa wewe

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ambao wanaweza vizuri sana na nzuri
kiasi cha uzoefu kuwa katika kwamba 9%

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ya vizuri zaidi.

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Hivyo kutambua kwamba kuna
juu sana dari

145
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hata ndani ya wale
changamoto kwa wanafunzi

146
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kuja kutoka background tofauti.

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Kwa sababu mwisho wa
siku, tuko hatimaye

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ililenga kabisa tu juu ya hili.

149
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>> Lakini ni nini hii
maana, utatuzi wa matatizo?

150
00:06:57,010 --> 00:06:59,100
Basi hebu kupendekeza kwamba
sisi distill ni kama hii.

151
00:06:59,100 --> 00:07:01,550
Hivyo kutatua tatizo ni kweli
tu aina hii ya picha.

152
00:07:01,550 --> 00:07:04,675
Basi nimepata pembejeo kwa baadhi ya tatizo,
kitu wewe kweli unataka kutatua.

153
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Lengo ni kupata matokeo,
ufumbuzi wa tatizo hilo.

154
00:07:07,020 --> 00:07:09,950
Na kisha katikati ni
nini tutaweza kuwaita sanduku nyeusi.

155
00:07:09,950 --> 00:07:13,970
Wewe si lazima kujua au hata
huduma nini ndani ya kwamba sanduku nyeusi.

156
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Wote mnajua ni kwamba wakati
kulisha pembejeo ndani yake,

157
00:07:16,670 --> 00:07:19,890
wewe hopefully kupata pato
au ufumbuzi kutoka humo.

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Na wakati leo tutaangalia
zote mbili kwa pembejeo na mazao,

159
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tutaweza muda mrefu, na juu ya
kozi ya muhula mzima,

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kuzingatia nini ndani ya boksi hilo.

161
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>> Na humo uongo
kitu kinachoitwa algorithms.

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Hatua kwa hatua maelekezo kwa
kweli kutatua baadhi ya matatizo.

163
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Lakini nini mfano wa baadhi ya pembejeo hizo?

164
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Hivyo labda kitu rahisi katika
kuanza ya kila mwaka shule, mtu

165
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kutaka kuchukua mahudhurio.

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Hivyo tupate kufanya moja, mbili,
tatu, nne, tano, sita,

167
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na jinsi gani mimi kuweka
wimbo wa habari hiyo.

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Mimi ili tu kwenda moja, mbili,
tatu, nne, tano, sita.

169
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Na tu kutumia aina ya tarakimu moja.

170
00:07:47,720 --> 00:07:51,210
>> Au mimi naweza kweli kurekodi
hii kidogo muda mrefu.

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Na jinsi gani mimi kuwakilisha zote
binadamu katika chumba hiki?

172
00:07:53,340 --> 00:07:54,900
Naam, mimi ili kufanya kitu kama, OK.

173
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Mimi naona mtu mmoja.

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Sawa.

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00:07:56,600 --> 00:08:01,180
Mimi naona mtu mwingine, a
mtu wa tatu, na kadhalika.

176
00:08:01,180 --> 00:08:04,070
Lakini hakuna mtu makosa watu kama hii.

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Hivyo literally, wengi wetu kama tuko
hata kwenda kuteka chochote wakati wote,

178
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ni pengine inaweza kwenda
moja mbili tatu nne,

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labda kupata dhana kidogo, tano, sita,
saba, nane, tisa, kumi na kadhalika.

180
00:08:14,240 --> 00:08:16,960
>> Na kwamba ni kweli
mfumo uitwao unary.

181
00:08:16,960 --> 00:08:20,549
Uno, kama uno ikimaanisha moja, ambapo
tu na barua moja ya alfabeti.

182
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Umefanya tu got alama hii hash.

183
00:08:21,840 --> 00:08:24,570
Na mimi, kwa ufanisi, tu akauchomoa
alama hizi hash, hatimaye

184
00:08:24,570 --> 00:08:25,500
mistari kama moja kwa moja.

185
00:08:25,500 --> 00:08:27,666
Lakini mimi naweza tuwavute waende
kama takwimu kidogo fimbo.

186
00:08:27,666 --> 00:08:29,550
Ambapo kuiwakilisha
mtu mmoja, pembejeo moja,

187
00:08:29,550 --> 00:08:32,210
I just kuteka fimbo
takwimu au alama hash.

188
00:08:32,210 --> 00:08:33,910
Lakini hii si yote expressive.

189
00:08:33,910 --> 00:08:38,020
>> Kama mimi wote ni hizi hash
alama, achilia mbali takwimu fimbo,

190
00:08:38,020 --> 00:08:41,410
jinsi gani mimi kuwakilisha
kitu kama namba 15?

191
00:08:41,410 --> 00:08:43,050
Au watu 15 katika chumba?

192
00:08:43,050 --> 00:08:48,740
Nipate kuwa kufanya kitu kama 1,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,

193
00:08:48,740 --> 00:08:51,270
14, 15.

194
00:08:51,270 --> 00:08:52,830
Ni tu haina wadogo vizuri sana.

195
00:08:52,830 --> 00:08:55,730
Kama pembejeo kupata kubwa, sisi
haja mfumo bora zaidi kuliko haya.

196
00:08:55,730 --> 00:08:57,910
>> Na zinageuka kuwa
mfumo kwamba kompyuta kutumia

197
00:08:57,910 --> 00:09:00,510
si yote tofauti
kutokana na kile wewe na mimi kujua.

198
00:09:00,510 --> 00:09:03,301
Kwa kweli, watu wengi katika chumba hiki,
hata kama wewe ni miongoni mwa walio chini

199
00:09:03,301 --> 00:09:06,300
starehe, si lazima kujua
jinsi Mac au PC yako kweli kazi,

200
00:09:06,300 --> 00:09:09,810
umefanya pengine angalau kusikia, kwamba
chini ya kofia ni 0 na 1 ya.

201
00:09:09,810 --> 00:09:11,390
kinachojulikana binary mfumo.

202
00:09:11,390 --> 00:09:15,340
Hivyo kweli, kompyuta na zaidi ya
tu alama hash katika msamiati wao,

203
00:09:15,340 --> 00:09:17,450
lakini si kama kiasi ya
msamiati kama sisi binadamu.

204
00:09:17,450 --> 00:09:19,210
>> Hakika, sisi binadamu hawatumii mapacha.

205
00:09:19,210 --> 00:09:21,160
Bi maana 2, 0 na 1.

206
00:09:21,160 --> 00:09:24,140
Lakini decimal, Deca
maana 10, 0 kupitia 9.

207
00:09:24,140 --> 00:09:27,660
Hivyo tuna mengi zaidi expressive
uwezo katika dunia yetu ya kawaida ya binadamu.

208
00:09:27,660 --> 00:09:31,720
Lakini ningependa kusema kwamba mifumo hii,
binary, na decimal, na kila kitu

209
00:09:31,720 --> 00:09:35,290
katika kati ya na zaidi, ni
kweli wote kabisa ukoo.

210
00:09:35,290 --> 00:09:39,650
Kwa mfano, fikiria
mfano huu hapa, 123.

211
00:09:39,650 --> 00:09:43,850
Hivyo hii ni kweli, bila shaka,
idadi tunajua kama 123.

212
00:09:43,850 --> 00:09:47,160
Lakini wote mimi tu akauchomoa mara tu hii
mfano wa alama, glyphs hivyo kusema.

213
00:09:47,160 --> 00:09:49,100
Aina ya maumbo kwenye bodi katika chaki.

214
00:09:49,100 --> 00:09:52,951
>> Lakini kwa nini sisi mara moja na
intuitively kufahamu hii kama 123?

215
00:09:52,951 --> 00:09:54,700
Naam, kama ungekuwa kama
me katika shule ya daraja,

216
00:09:54,700 --> 00:09:59,920
wewe pengine kujifunza kwamba hii ni
1s safu, hii ni 10s safu,

217
00:09:59,920 --> 00:10:01,330
hii ni 100s safu.

218
00:10:01,330 --> 00:10:02,860
Na kwa nini ni kwamba muhimu?

219
00:10:02,860 --> 00:10:06,440
Naam, ni rahisi hesabu sasa
kufanya ili kupata kutoka mfano wa alama

220
00:10:06,440 --> 00:10:08,940
kwa idadi tunaelewa shirikishi.

221
00:10:08,940 --> 00:10:14,160
Ni nini, mara 100 1, na kisha
10 mara 2, na 1 mara 3,

222
00:10:14,160 --> 00:10:17,860
ambayo bila shaka ni tu 100, na
hii ni 20, na hii ni tatu.

223
00:10:17,860 --> 00:10:19,740
Na hivyo kama sisi kuongeza wale together-- ah.

224
00:10:19,740 --> 00:10:23,880
Hivyo humo uongo aina ya hoja
nyuma kwa nini hii seti ya alama

225
00:10:23,880 --> 00:10:26,550
maana yake ni kitu halisi na nambari.

226
00:10:26,550 --> 00:10:32,030
>> Naam, kompyuta kufanya exact kitu,
lakini wao tu unaweza kuhesabu kama juu kama moja.

227
00:10:32,030 --> 00:10:34,400
Wakati mimi alikuwa na uwezo wa
kuhesabu kama juu kama tatu.

228
00:10:34,400 --> 00:10:37,380
Na kwa kweli, kama mimi naendelea kwenda ningeweza
kwenda juu kama tisa katika mfumo huu.

229
00:10:37,380 --> 00:10:40,430
Kompyuta tu kuwa zeros
na ndio katika alfabeti yao.

230
00:10:40,430 --> 00:10:41,410
>> Hivyo hiyo ina maana gani?

231
00:10:41,410 --> 00:10:46,900
Naam, ni tu ina maana kwamba kama kompyuta
anataka kuwakilisha, wanasema idadi 0,

232
00:10:46,900 --> 00:10:51,300
labda kwa kutumia tatu characters-- tatu
herufi za alfabeti hivyo kusema,

233
00:10:51,300 --> 00:10:53,050
hiyo ni jinsi kompyuta inawakilisha 0.

234
00:10:53,050 --> 00:10:54,620
Hivyo si wote kwamba inatisha hadi sasa.

235
00:10:54,620 --> 00:10:56,450
Ni nini hasa sisi wanadamu atafanya.

236
00:10:56,450 --> 00:10:59,410
Na kwa kweli, wengi wetu ingekuwa tu
kupuuza zeros kuongoza anyway.

237
00:10:59,410 --> 00:11:01,640
>> kompyuta, kama inataka
kuhifadhi namba 1,

238
00:11:01,640 --> 00:11:03,330
zamu nje ni kwenda kufanya hivyo.

239
00:11:03,330 --> 00:11:05,630
Na kompyuta ya kuhifadhi
namba 2 ni si

240
00:11:05,630 --> 00:11:09,280
kwenda kufanya mfumo unary,
ambayo mimi alluded mapema.

241
00:11:09,280 --> 00:11:11,360
Ni kweli kwenda kufanya hili.

242
00:11:11,360 --> 00:11:13,570
Na hii pengine ni
ambapo mfano kuanza

243
00:11:13,570 --> 00:11:15,570
kuwa chini ya dhahiri kwa folks wengi.

244
00:11:15,570 --> 00:11:18,580
Hiyo ni 2, hii ni 3.

245
00:11:18,580 --> 00:11:21,600
Jambo la ajabu, hili ni sasa 4.

246
00:11:21,600 --> 00:11:24,120
Na sasa ni kweli haina
kuonekana kuwa labda cryptic,

247
00:11:24,120 --> 00:11:26,762
lakini siyo kama tunaona
nini binary kweli maana yake.

248
00:11:26,762 --> 00:11:28,720
Ina maana una mbili
herufi za alfabeti yako.

249
00:11:28,720 --> 00:11:31,940
Hivyo wawili wahusika iwezekanavyo
kwa kila placeholder.

250
00:11:31,940 --> 00:11:35,970
>> Hivyo kwamba kweli ina maana tunakwenda
haja mahali 1s, 2S au mahali,

251
00:11:35,970 --> 00:11:40,800
mahali 4s na kisha
8, na 16, 32, na 64.

252
00:11:40,800 --> 00:11:42,290
Na nini tofauti huko?

253
00:11:42,290 --> 00:11:47,150
Kama haya ni 1, 2, 4, 8, 16, 32, 64.

254
00:11:47,150 --> 00:11:50,690
Na kabla tulikuwa na 110, 100,000, 10,000.

255
00:11:50,690 --> 00:11:53,170
Nini kufanana huko?

256
00:11:53,170 --> 00:11:54,940
Na nini mfano?

257
00:11:54,940 --> 00:11:55,505
Yeah.

258
00:11:55,505 --> 00:11:57,380
STUDENT: Mamlaka ya 2
badala ya nguvu za 10.

259
00:11:57,380 --> 00:11:57,660
DAVID Malan: Yeah.

260
00:11:57,660 --> 00:11:59,290
Mamlaka ya 2 badala ya nguvu za 10.

261
00:11:59,290 --> 00:12:02,160
Na hivyo kama nilitaka kuweka
kwenda, 8, 16s na hivyo sana aliye mzaa

262
00:12:02,160 --> 00:12:05,822
lakini sasa kama una aina hii
ya fununu, sasa mfumo binary

263
00:12:05,822 --> 00:12:07,280
ni kweli pretty moja kwa moja.

264
00:12:07,280 --> 00:12:10,910
Kwa nini ni muundo huu wa 0 ya
katika ulimwengu wa kompyuta 0?

265
00:12:10,910 --> 00:12:14,910
Naam kwa sababu ni mara 4 0, 2
mara 0, 1 mara 0 na kupata 0.

266
00:12:14,910 --> 00:12:16,650
>> Kwa nini hii ni namba 1?

267
00:12:16,650 --> 00:12:20,070
Same hoja, lakini sasa sisi
1 katika safu ya 1.

268
00:12:20,070 --> 00:12:21,840
Kwa nini hii ni 2?

269
00:12:21,840 --> 00:12:24,450
Tuna 1 katika safu 2S.

270
00:12:24,450 --> 00:12:30,190
Na jinsi kisha kufanya mimi kuwakilisha
kusema, namba 7 katika binary?

271
00:12:30,190 --> 00:12:31,324
Sema kwa sauti.

272
00:12:31,324 --> 00:12:32,170
>> STUDENT: Tatu 1s.

273
00:12:32,170 --> 00:12:33,086
>> DAVID Malan: Tatu 1s.

274
00:12:33,086 --> 00:12:37,110
Hivyo 1, 1, 1 kwa sababu sisi tu haja
4 plus 2 plus 1 anitiaye 7.

275
00:12:37,110 --> 00:12:37,610
Sawa.

276
00:12:37,610 --> 00:12:40,410
Hivyo kutokana na huko ni jinsi gani sisi
kuwakilisha 8 na 3 placeholders?

277
00:12:40,410 --> 00:12:43,310

278
00:12:43,310 --> 00:12:43,922
Yeah.

279
00:12:43,922 --> 00:12:45,070
>> STUDENT: 1, 0, 0, 0.

280
00:12:45,070 --> 00:12:46,970
>> DAVID Malan: Yeah 1, 0, 0, 0.

281
00:12:46,970 --> 00:12:49,380
Na bado labda, mimi aina
ya kitaalam haja

282
00:12:49,380 --> 00:12:52,380
kuongeza placeholder nyingine ya bodi.

283
00:12:52,380 --> 00:12:55,480
Kama mimi nataka na kifafa kwamba mimi kweli
haja ya kufanya kitu kama hiki.

284
00:12:55,480 --> 00:12:58,990
Hivyo mimi kwa kweli haja ya kutumia sasa
safu 8s, na hiyo ni faini.

285
00:12:58,990 --> 00:13:02,680
Lakini jambo la ajabu katika kompyuta ni
kwamba ambayo inaenda gharama sisi kitu.

286
00:13:02,680 --> 00:13:04,390
Unahitaji RAM zaidi katika kompyuta yako sasa.

287
00:13:04,390 --> 00:13:06,348
Unahitaji kumbukumbu zaidi
kwa sababu unahitaji kitu

288
00:13:06,348 --> 00:13:09,650
kimwili kuhifadhi kwamba
ziada kidogo, hivyo kusema.

289
00:13:09,650 --> 00:13:10,700
Binary tarakimu.

290
00:13:10,700 --> 00:13:13,260
Na hakika yote yale yaliyotokea
hapa, kama mfumo wa decimal,

291
00:13:13,260 --> 00:13:17,380
kama sisi kuendelea kuongeza idadi ya juu na juu
na juu, sisi kwenda 5 hadi 6 kwa 7 hadi 8

292
00:13:17,380 --> 00:13:19,330
ni kama amebeba 1, literally.

293
00:13:19,330 --> 00:13:21,940
Na kisha kila kitu kingine
inakwenda nyuma chini ya sifuri.

294
00:13:21,940 --> 00:13:25,870
>> Lakini jinsi gani sisi kweli kuwakilisha
mambo haya kimwili katika kompyuta?

295
00:13:25,870 --> 00:13:29,380
Naam, mwisho wa siku, tu
pembejeo za kimwili kwenda katika kompyuta yangu

296
00:13:29,380 --> 00:13:33,630
hapa ni hii kamba ya nguvu, hivyo
umeme au elektroni kutoka ukuta.

297
00:13:33,630 --> 00:13:36,920
Na hivyo ni jinsi gani mimi kupata kutoka kitu
kimwili kama kwamba kwa kweli

298
00:13:36,920 --> 00:13:40,630
anayewakilisha wazo kama hii badala yake.

299
00:13:40,630 --> 00:13:41,930
>> Naam, ni nini tunaweza kufanya?

300
00:13:41,930 --> 00:13:45,560
Tunaweza kufikiria kwamba, wote haki,
labda kama umeme unaotokana

301
00:13:45,560 --> 00:13:47,420
Mimi naweza kuhifadhi na kushikilia yake.

302
00:13:47,420 --> 00:13:49,250
Na kama mimi nina kufanya juu
kwa baadhi ya umeme,

303
00:13:49,250 --> 00:13:51,700
kwamba tu kwenda
kiholela kuwakilisha 1.

304
00:13:51,700 --> 00:13:53,997
Na kama mimi kuvuta kuziba
na kuna kitu huko,

305
00:13:53,997 --> 00:13:56,330
unajua kwamba kinaendelea tu
kiholela kuwakilisha 0.

306
00:13:56,330 --> 00:13:57,700
>> Hivyo kama kitu ni huko, 1.

307
00:13:57,700 --> 00:13:59,280
Kama hakuna huko, 0.

308
00:13:59,280 --> 00:14:01,420
Au unaweza kufanya hii
kidogo zaidi ya kuona.

309
00:14:01,420 --> 00:14:02,704
Hapa ni 0.

310
00:14:02,704 --> 00:14:05,370
Kuna kitu kuvutia wanaokwenda
juu kuhusu nyuma ya simu yangu.

311
00:14:05,370 --> 00:14:08,690
Lakini kama mimi kuruhusu kidogo
kidogo ya umeme kati yake,

312
00:14:08,690 --> 00:14:11,490
hata kama ni kidogo mkali
humu ndani, tochi yangu aliendelea.

313
00:14:11,490 --> 00:14:15,840
Hivyo mimi nina kuhifadhi malipo na ergo,
simu hii sasa inawakilisha 1.

314
00:14:15,840 --> 00:14:17,700
Hivyo 0 1.

315
00:14:17,700 --> 00:14:23,630
>> Hivyo, pamoja na 1 iPhone jinsi ya juu Unaweza mimi
kuhesabu kwa kutumia aina hii ya mbinu?

316
00:14:23,630 --> 00:14:24,490
I mean 1.

317
00:14:24,490 --> 00:14:25,900
Ni si wote kwamba kulazimisha.

318
00:14:25,900 --> 00:14:27,170
Basi nini zaidi tunaweza kufanya?

319
00:14:27,170 --> 00:14:31,180
Naam hebu angalia, ni mtu yeyote juu yao
simu sasa hivi kwamba sikuweza kukopa?

320
00:14:31,180 --> 00:14:33,800
Mtu yeyote ambaye ana simu
na tochi kujengwa katika?

321
00:14:33,800 --> 00:14:34,969
Naomba kukopa?

322
00:14:34,969 --> 00:14:36,010
Mimi hawana haja ya kuwa unlocked.

323
00:14:36,010 --> 00:14:36,510
Sawa.

324
00:14:36,510 --> 00:14:37,150
Asante.

325
00:14:37,150 --> 00:14:37,780
Basi mimi kukopa huu.

326
00:14:37,780 --> 00:14:38,279
Sawa.

327
00:14:38,279 --> 00:14:45,570
Hivyo kama mimi sasa kitabu juu na hapa,
je, Mimi anayewakilisha sasa?

328
00:14:45,570 --> 00:14:46,070
Yeah.

329
00:14:46,070 --> 00:14:49,350
Hivyo ni tatu kwa sababu hii ni katika
1s safu, hii ni katika safu 2S.

330
00:14:49,350 --> 00:14:50,480
Hivyo 1 plus 2 ni 3.

331
00:14:50,480 --> 00:14:53,410
Na kisha kama sisi kujaribu kupata
kweli creative-- oh, asante.

332
00:14:53,410 --> 00:14:54,690
preemptive sana.

333
00:14:54,690 --> 00:14:55,560
Sawa.

334
00:14:55,560 --> 00:14:57,100
Mimi sasa kuwa na iphone tatu.

335
00:14:57,100 --> 00:14:58,810
Sawa.

336
00:14:58,810 --> 00:15:02,500
>> Na sasa Haya sipendi
kufanya lolote zaidi kuliko huu.

337
00:15:02,500 --> 00:15:04,380
Hivi mimi anayewakilisha sasa?

338
00:15:04,380 --> 00:15:05,090
sevens tu.

339
00:15:05,090 --> 00:15:08,000
Lakini mimi zinahitajika kimwili
zaidi ya kumbukumbu katika kesi hii.

340
00:15:08,000 --> 00:15:08,920
Lakini hiyo yote ni.

341
00:15:08,920 --> 00:15:12,870
Unaweza kufikiria nini kinaendelea on--
kuwashukuru you-- ndani ya simu yako

342
00:15:12,870 --> 00:15:16,240
kama tu kuwa kubadili hiyo ni
kuwa akageuka na mbali.

343
00:15:16,240 --> 00:15:18,350
>> Na kama wameweza milele kusikia
neno transistor.

344
00:15:18,350 --> 00:15:21,312
Au kama wameweza milele kusikia
masoko kusema Intel ndani,

345
00:15:21,312 --> 00:15:24,270
hiyo akizungumza na aina ya vifaa
kwamba ndani ya kompyuta yako.

346
00:15:24,270 --> 00:15:26,707
Intel hufanya CPUs,
usindikaji kuu vitengo,

347
00:15:26,707 --> 00:15:28,790
ambayo ni kama bongo
ndani ya kompyuta yako.

348
00:15:28,790 --> 00:15:30,640
Na CPUs haya na
mambo wao ni kushikamana

349
00:15:30,640 --> 00:15:32,740
kuwa na kura na kura ya swichi vidogo.

350
00:15:32,740 --> 00:15:36,440
Mamilioni, Mabilioni ya swichi
ambayo yanaweza ama kuwa juu au mbali.

351
00:15:36,440 --> 00:15:38,840
>> Hivyo kompyuta, nashiriki,
kama Macs yetu na PC,

352
00:15:38,840 --> 00:15:43,830
Unaweza kuhesabu njia juu kuliko 7 au 8
kwa sababu wana njia zaidi ya tatu

353
00:15:43,830 --> 00:15:44,660
au bits nne.

354
00:15:44,660 --> 00:15:48,140
Njia zaidi ya sawa ya
flashlights tatu kwamba sisi tu alikuwa.

355
00:15:48,140 --> 00:15:52,110
Lakini sasa hii kuanza kupata
pretty uninteresting haraka.

356
00:15:52,110 --> 00:15:55,810
Kama mimi sasa wanataka kweli kuwa na uwezo
kufanya kitu zaidi ya kuvutia,

357
00:15:55,810 --> 00:16:00,340
Nataka kuwa na uwezo wa kuruka
kwa kitu kama hiki.

358
00:16:00,340 --> 00:16:03,604
>> Hivyo ASCII, ni kweli si muhimu
kifupi, lakini American Standard Kanuni

359
00:16:03,604 --> 00:16:04,770
Mabadilishano ya Habari.

360
00:16:04,770 --> 00:16:07,450
Ni tu ina maana, baadhi ya miaka
iliyopita sisi binadamu aliamua,

361
00:16:07,450 --> 00:16:10,724
unajua nini, tunataka kuwa na uwezo wa kufanya
zaidi kwa kompyuta kuliko idadi tu.

362
00:16:10,724 --> 00:16:12,890
Hatutaki wao tu
kuwa ghali calculators,

363
00:16:12,890 --> 00:16:16,730
tunatarajia kuwa na uwezo wa kufanya mambo kama
neno usindikaji, angalau sana tu.

364
00:16:16,730 --> 00:16:20,030
Baadaye tulikuwa na barua pepe na vyombo vingine vya habari kama hizo.

365
00:16:20,030 --> 00:16:23,700
>> Na hivyo dunia aliamua baadhi ya miaka
iliyopita kwa mujibu wa mfumo huu ASCII,

366
00:16:23,700 --> 00:16:24,770
Unajua nini?

367
00:16:24,770 --> 00:16:26,970
Katika baadhi ya aina
mipango wakati wowote

368
00:16:26,970 --> 00:16:30,649
angalia sawa na idadi
65, kama mfano wa bits.

369
00:16:30,649 --> 00:16:32,440
Na tunaweza kufanya
math hapa kwenye ubao.

370
00:16:32,440 --> 00:16:34,450
mfano wa bits kwamba kuwakilisha 65.

371
00:16:34,450 --> 00:16:37,240
Je, si kufikiria kama 65 katika decimal.

372
00:16:37,240 --> 00:16:41,620
Fikiria kama kiholela, lakini
kimataifa, mfululizo kama mji mkuu

373
00:16:41,620 --> 00:16:42,201
A.

374
00:16:42,201 --> 00:16:43,950
Na kisha dunia
aliamua, unajua nini?

375
00:16:43,950 --> 00:16:45,630
Hebu kuchukua mfano mwingine wa bits.

376
00:16:45,630 --> 00:16:47,770
Na kama sisi milele kuona
idadi 66, hebu tu

377
00:16:47,770 --> 00:16:50,573
kudhani kuwa kwamba ni
mji mkuu B. Fast mbele kwa H

378
00:16:50,573 --> 00:16:55,510
na mimi, kama unaweza kuona 72 au 73, kwamba
lazima H na mimi, kwa mtiririko huo.

379
00:16:55,510 --> 00:16:57,780
Na hivyo muda mrefu kama zima
dunia kukubaliana juu ya hili.

380
00:16:57,780 --> 00:17:01,342
Hivyo kwamba wakati wewe kupokea barua pepe, au
ungependa kupata file juu ya fimbo USB,

381
00:17:01,342 --> 00:17:03,800
au kitu kama hicho wakati
unaweza kuona kwamba mfano wa bits,

382
00:17:03,800 --> 00:17:06,980
unajua kwamba ni lazima kuwa hii
barua au baadhi barua wengine.

383
00:17:06,980 --> 00:17:08,620
>> Lakini ni mazingira maalum, haki.

384
00:17:08,620 --> 00:17:12,250
mpango email inaweza kutafsiri
mambo haya kama wahusika,

385
00:17:12,250 --> 00:17:15,760
lakini graphing Calculator au
calculator inaweza kuwakilisha au kutafsiri

386
00:17:15,760 --> 00:17:18,370
mambo haya, bila shaka, kama barua.

387
00:17:18,370 --> 00:17:21,610
>> Hivyo kwa kuwa alisema, haraka mapitio kidogo.

388
00:17:21,610 --> 00:17:25,440
Hii ni labda tabia tatu
barua pepe hiyo imekuwa wametumwa kwangu.

389
00:17:25,440 --> 00:17:27,990
Chini ya kofia ni yote katika
Sekunde 0 na 1s, Lakini sisi hawajali.

390
00:17:27,990 --> 00:17:31,580
Tunakwenda kuanza abstract
juu sekunde 0 na 1s kwa barua.

391
00:17:31,580 --> 00:17:36,830
Na kama mimi kuona mfano wa sekunde 0 na 1s kwamba
kweli kuwakilisha 72, ladha, ladha, 73,

392
00:17:36,830 --> 00:17:38,866
na kisha 33, nini ujumbe?

393
00:17:38,866 --> 00:17:40,348
>> STUDENT: [inaudible]

394
00:17:40,348 --> 00:17:42,639
DAVID Malan: Hivyo kama unadhani
nyuma muda tu iliyopita, HI

395
00:17:42,639 --> 00:17:47,210
ulikuwa ujumbe mimi alikuwa anajaribu
kuwasiliana hapa kwa sababu H ni 72,

396
00:17:47,210 --> 00:17:50,925
Mimi ni 73, na sasa 33-- hamkutaka
lazima kujua hii mapema,

397
00:17:50,925 --> 00:17:53,800
lakini zinageuka kama kweli
kuona zaidi ya chati na mfumo

398
00:17:53,800 --> 00:17:56,800
kwamba ubinadamu yaliyokubaliwa miaka
iliyopita, ni tu mshangao uhakika.

399
00:17:56,800 --> 00:18:01,590
Na hakika, kuna mfano wa
alama na namba kwa kila tabia

400
00:18:01,590 --> 00:18:03,849
kwamba unaweza kuwa kwenye keyboard yako.

401
00:18:03,849 --> 00:18:04,389
>> Sawa.

402
00:18:04,389 --> 00:18:05,660
Hebu abstract zaidi.

403
00:18:05,660 --> 00:18:09,380
Kama hatutaki kuwa na tu
mambo kama idadi na barua,

404
00:18:09,380 --> 00:18:11,420
sisi kweli wanataka kutekeleza graphics.

405
00:18:11,420 --> 00:18:13,351
Naam, kama wewe wameweza milele
kusikia kifupi RGB.

406
00:18:13,351 --> 00:18:15,559
Ni aina ya tarehe sasa, lakini
bado ni aina ya huko.

407
00:18:15,559 --> 00:18:17,380
RGB ni nyekundu, kijani, bluu.

408
00:18:17,380 --> 00:18:19,380
Na ni tu mfumo
ya kusema, unajua nini,

409
00:18:19,380 --> 00:18:21,650
hebu kutumia seti tatu ya bits.

410
00:18:21,650 --> 00:18:25,280
seti ya 8 bits, mwingine seti ya 8
bits, na mwingine seti ya 8 bits.

411
00:18:25,280 --> 00:18:27,710
Na hebu kutumia bits wale
kuhifadhi kiasi gani nyekundu sisi

412
00:18:27,710 --> 00:18:31,430
unataka kwenye screen wetu, ni kiasi gani
kijani tunataka kwenye screen zetu,

413
00:18:31,430 --> 00:18:34,070
na kiasi gani bluu tunataka kwenye screen yetu.

414
00:18:34,070 --> 00:18:37,860
Na hii ina maana tu kwamba kama wewe
na lot-- idadi kubwa ya nyekundu,

415
00:18:37,860 --> 00:18:39,200
hiyo ina maana nipe mengi ya nyekundu.

416
00:18:39,200 --> 00:18:41,658
Kama una idadi kubwa ya
kijani, nipe mengi ya kijani.

417
00:18:41,658 --> 00:18:44,660
Na kama una kidogo tu
ya bluu au idadi ndogo kama 33,

418
00:18:44,660 --> 00:18:45,960
nipe kidogo ya bluu.

419
00:18:45,960 --> 00:18:49,720
Na kama kutokea kwa kuchanganya wale
magnitudes tatu, hivyo kusema,

420
00:18:49,720 --> 00:18:53,160
kupata Haya wewe vigumu unaweza kuona kwenye
projector hapa, lakini hii usaha

421
00:18:53,160 --> 00:18:54,630
kivuli cha njano au kahawia.

422
00:18:54,630 --> 00:18:58,590
>> Lakini hii ni kusema, kwa kutumia kwamba
mfano wa 8 plus 8 plus plus 8--

423
00:18:58,590 --> 00:19:01,710
kwamba mfano wa bits 24
ni jinsi ya kompyuta ingekuwa

424
00:19:01,710 --> 00:19:06,460
kuhifadhi kwamba kivuli cha njano katika moja
vidogo dot pixel juu ya screen.

425
00:19:06,460 --> 00:19:10,570
Hivyo tumekuwa gone kutoka sekunde 0 na 1s kwa decimal
idadi ya herufi za alfabeti.

426
00:19:10,570 --> 00:19:13,680
Au zaidi ya kuvutia, rangi dots.

427
00:19:13,680 --> 00:19:16,200
>> Naam, ni nini bila shaka kisha huja baada ya hapo?

428
00:19:16,200 --> 00:19:19,040
Naam, ni nini picha kwamba wewe
kuona kwenye Facebook au kupata katika email?

429
00:19:19,040 --> 00:19:20,172
Au kama?

430
00:19:20,172 --> 00:19:22,130
ni ufafanuzi gani
kitaalam ya picha?

431
00:19:22,130 --> 00:19:25,090

432
00:19:25,090 --> 00:19:27,710
Yeah.

433
00:19:27,710 --> 00:19:31,270
ni mfano linajumuisha kama wewe nini
kuangalia kweli karibu katika screen yako?

434
00:19:31,270 --> 00:19:31,770
Yeah.

435
00:19:31,770 --> 00:19:33,186
Ni tu rundo zima la saizi.

436
00:19:33,186 --> 00:19:35,220
Kwa kweli, kama wewe kuchukua yako
mbali labda baadaye,

437
00:19:35,220 --> 00:19:37,180
na kuangalia kweli kwa karibu
katika it-- kutegemea

438
00:19:37,180 --> 00:19:40,370
juu ya jinsi ghali mbali ni na
jinsi high quality screen ni,

439
00:19:40,370 --> 00:19:43,480
unaweza vizuri sana kuona yote ya
dots kidogo juu ya screen.

440
00:19:43,480 --> 00:19:45,890
>> Na wale dots au saizi
ambayo ina maana kuna

441
00:19:45,890 --> 00:19:49,810
24 bits anayewakilisha kila pixel katika kwamba
picha kwamba unaweza kuona kwenye Facebook,

442
00:19:49,810 --> 00:19:52,049
au kwamba wewe tu alichukua
juu ya iPhone yako hivi karibuni.

443
00:19:52,049 --> 00:19:54,090
Na hivyo hiyo ni jinsi sisi kupata
mambo kama graphics.

444
00:19:54,090 --> 00:19:55,120
Naam, nini video?

445
00:19:55,120 --> 00:19:58,660
video ni tu seti ya graphics
kuruka kwa screen tena

446
00:19:58,660 --> 00:19:59,780
na tena na tena.

447
00:19:59,780 --> 00:20:04,080
Na hivyo video kweli, ni chati tu
ya bits anayewakilisha grids, safu

448
00:20:04,080 --> 00:20:06,880
na nguzo ya dots,
kuruka kwa screen picha,

449
00:20:06,880 --> 00:20:09,240
kwa mfano, baada ya picha, kwa jina lingine

450
00:20:09,240 --> 00:20:10,650
Mwendo picha.

451
00:20:10,650 --> 00:20:12,340
Hivyo hiyo ni kwa pembejeo na mazao.

452
00:20:12,340 --> 00:20:14,420
>> Wote tuna sasa ni
dhana kwamba, wewe

453
00:20:14,420 --> 00:20:17,190
kujua nini, kama tunataka kompyuta
kwa kuwakilisha taarifa,

454
00:20:17,190 --> 00:20:18,560
tuna mfumo kwa kufanya hivyo.

455
00:20:18,560 --> 00:20:20,780
Tunaweza kufanya hivyo kwa sekunde 0 na
1s mwisho wa siku.

456
00:20:20,780 --> 00:20:23,160
Lakini tunaweza abstract, hivyo
kusema, juu ya kwamba

457
00:20:23,160 --> 00:20:25,140
ili kuwakilisha zaidi
mambo ya kuvutia.

458
00:20:25,140 --> 00:20:28,790
Na hapa juu ya nje katika CS50, na katika
sayansi ya kompyuta kwa ujumla zaidi,

459
00:20:28,790 --> 00:20:31,250
sisi sasa kusimama juu ya mabega
ya watu wote ambao

460
00:20:31,250 --> 00:20:33,530
alikuja mbele yetu ambaye figured kwamba nje.

461
00:20:33,530 --> 00:20:38,170
Na sasa tu kudhani kwamba kompyuta
wanaweza kuwakilisha pembejeo na mazao.

462
00:20:38,170 --> 00:20:41,140
>> Lakini sasa hebu kweli
kufanya kitu pamoja nao.

463
00:20:41,140 --> 00:20:44,850
Hivyo algorithm ni tu kuweka
ya maelekezo, hatua kwa hatua,

464
00:20:44,850 --> 00:20:46,340
kwa ajili ya kutatua tatizo fulani.

465
00:20:46,340 --> 00:20:48,730
Na nini inaweza moja tatizo kama kuwa.

466
00:20:48,730 --> 00:20:52,440
Hivyo hii ni umri wa shule
teknolojia, kitabu cha simu.

467
00:20:52,440 --> 00:20:55,534
Na ndani ya kitabu cha simu ni
zima rundo la majina na namba.

468
00:20:55,534 --> 00:20:57,700
Na majina hayo kwa ujumla
yamepangwa alphabetically.

469
00:20:57,700 --> 00:21:01,310
>> Hivyo kama nilitaka kupata mtu katika
hii kitabu cha simu kama Mike Smith,

470
00:21:01,310 --> 00:21:02,930
nini binadamu wa kawaida kwenda kufanya?

471
00:21:02,930 --> 00:21:06,000
Naam, unaweza tu kufungua
it up, tuangalie ukurasa wa kwanza.

472
00:21:06,000 --> 00:21:07,390
Sioni Mike Smith.

473
00:21:07,390 --> 00:21:09,740
Wafungue ukurasa wa pili,
Sioni Mike Smith.

474
00:21:09,740 --> 00:21:11,830
Na tu kuendelea na kwenda.

475
00:21:11,830 --> 00:21:14,397
Ni hatua kwa hatua njia sahihi?

476
00:21:14,397 --> 00:21:17,380

477
00:21:17,380 --> 00:21:18,310
Yeah.

478
00:21:18,310 --> 00:21:20,080
Ni aina ya kijinga, haki.

479
00:21:20,080 --> 00:21:21,646
Ni ufanisi, haki.

480
00:21:21,646 --> 00:21:24,520
Kwa sababu ni kwenda kuchukua milele
kupata Mike, lakini ni sahihi.

481
00:21:24,520 --> 00:21:26,620
Kwa sababu kama Mike ni hapa
Nami hakika kumpata.

482
00:21:26,620 --> 00:21:29,030
>> Basi nini kidogo zaidi
mtu busara kwenda kufanya?

483
00:21:29,030 --> 00:21:32,180
Wapate bado wazi kwa mbele,
na labda kuruka kupitia kitabu cha simu

484
00:21:32,180 --> 00:21:33,250
kurasa mbili kwa wakati.

485
00:21:33,250 --> 00:21:34,840
Mbili, nne, sita, nane.

486
00:21:34,840 --> 00:21:36,830
Siwezi kweli
kimwili kufanya vizuri sana.

487
00:21:36,830 --> 00:21:39,560
Lakini katika nadharia, hii inapaswa kuwa
mara mbili kwa haraka, kurasa mbili kwa wakati.

488
00:21:39,560 --> 00:21:41,152
Ni algorithm hii ni sahihi?

489
00:21:41,152 --> 00:21:43,252
>> STUDENT: [inaudible]

490
00:21:43,252 --> 00:21:44,460
DAVID Malan: Si lazima.

491
00:21:44,460 --> 00:21:44,960
Nzuri.

492
00:21:44,960 --> 00:21:46,112
Kwa nini kwamba caveat?

493
00:21:46,112 --> 00:21:50,020
>> STUDENT: Kwa sababu angeweza kuwa kwenye moja
ya kurasa kwamba wewe ni kuruka.

494
00:21:50,020 --> 00:21:50,770
DAVID Malan: Yeah.

495
00:21:50,770 --> 00:21:52,260
Hivyo hata kama mimi kupata karibu na karibu.

496
00:21:52,260 --> 00:21:56,150
Nini kama yeye tu ajali, na mbaya
Bahati, ipo kati ya kurasa mbili

497
00:21:56,150 --> 00:21:57,290
kwamba mimi nina kuruka juu?

498
00:21:57,290 --> 00:21:59,920

499
00:21:59,920 --> 00:22:01,730
Kwa hiyo, tunahitaji kurekebisha kwa hili.

500
00:22:01,730 --> 00:22:03,590
Sisi kwa kweli wanahitaji
basi sema, kusubiri dakika,

501
00:22:03,590 --> 00:22:06,240
labda kama sisi kwenda mbali mno, labda
kama sisi kugonga T sehemu,

502
00:22:06,240 --> 00:22:09,670
kwa T anakuja baada Smith, basi tunapaswa
angalau mara mbili nyuma ukurasa mmoja.

503
00:22:09,670 --> 00:22:12,630
Hivyo fixable, lakini kuna
Suala masharti huko.

504
00:22:12,630 --> 00:22:16,159
Hivyo ni mara mbili kwa haraka, lakini waweza
kuwa mara mbili nyuma kidogo tu.

505
00:22:16,159 --> 00:22:19,200
Lakini hakuna mtu katika chumba chake, hata kama wewe
si kweli kutumia vitabu simu tena,

506
00:22:19,200 --> 00:22:20,740
ni kwenda kuanza mwanzoni.

507
00:22:20,740 --> 00:22:23,317
Je, ni wewe kwenda kufanya
kuangalia kwa Mike Smith?

508
00:22:23,317 --> 00:22:24,900
Wewe ni kwenda kwenda takribani kwa ya S.

509
00:22:24,900 --> 00:22:26,820
Au kama wewe si kweli kuwa
karatasi ya kudanganya juu ya karatasi,

510
00:22:26,820 --> 00:22:28,365
wewe ni kwenda angalau
takribani katikati.

511
00:22:28,365 --> 00:22:30,220
Na hakika si kwa
mbele ya kitabu.

512
00:22:30,220 --> 00:22:31,130
Wewe ni kwenda kuangalia chini.

513
00:22:31,130 --> 00:22:33,770
Na hesabu wewe pengine
kwenda kuona M sehemu, ambayo

514
00:22:33,770 --> 00:22:34,890
ni takribani katikati.

515
00:22:34,890 --> 00:22:36,848
Na kisha utaenda
kutambua, ni nini kweli?

516
00:22:36,848 --> 00:22:37,968
Ambapo ni Mike?

517
00:22:37,968 --> 00:22:39,170
>> STUDENT: [inaudible]

518
00:22:39,170 --> 00:22:39,920
DAVID Malan: Yeah.

519
00:22:39,920 --> 00:22:41,530
Hivyo yeye ni juu ya upande huu.

520
00:22:41,530 --> 00:22:42,710
Na hivyo unaweza kufanya nini?

521
00:22:42,710 --> 00:22:48,870
Naam, wote figuratively na kuandika
unaweza machozi tatizo katika nusu mara moja?

522
00:22:48,870 --> 00:22:54,260
Na kisha kujua kwamba unaweza kutupa
hii nusu ya tatizo mbali.

523
00:22:54,260 --> 00:22:58,170
Na sasa sisi ni wa kushoto na kimsingi
tatizo moja, lakini ni nusu kama kubwa.

524
00:22:58,170 --> 00:22:59,920
Na hivyo sasa nini
seti ya maelekezo?

525
00:22:59,920 --> 00:23:01,753
Nini algorithm
kwa ajili ya kutafuta Mike Smith?

526
00:23:01,753 --> 00:23:03,030
Ni exact kitu.

527
00:23:03,030 --> 00:23:05,750
>> Sasa hii hutokea kwa kuwa M
sehemu na hii ni Z sehemu,

528
00:23:05,750 --> 00:23:08,650
lakini kimsingi
formula bado ni sawa.

529
00:23:08,650 --> 00:23:10,800
Kwenda takribani katikati,
kuangalia chini, oh, darn yake.

530
00:23:10,800 --> 00:23:13,160
Sasa mimi nina katika sehemu T,
Nimekuwa wamekwenda mbali mno.

531
00:23:13,160 --> 00:23:16,640
Lakini hapa pia Unaweza wewe
kuomba kwamba mantiki hiyo hiyo.

532
00:23:16,640 --> 00:23:19,189
Kutupa nusu ya tatizo
mbali na sasa tuko

533
00:23:19,189 --> 00:23:21,230
kushoto na tatizo hilo
robo ya kawaida.

534
00:23:21,230 --> 00:23:28,140
Na tunaweza kurudia, na tunaweza kurudia,
na tunaweza kurudia mpaka kinadharia

535
00:23:28,140 --> 00:23:32,190
kuna moja tu ukurasa wa kushoto juu ya
ambayo Mike ama ni au si.

536
00:23:32,190 --> 00:23:34,014
>> Basi nini hivyo nguvu kuhusu wazo hili?

537
00:23:34,014 --> 00:23:35,680
I mean baada ya yote, ni pretty Intuitive.

538
00:23:35,680 --> 00:23:37,390
Hakuna mtu anaenda kuanza saa
mwanzo wa kitabu cha simu

539
00:23:37,390 --> 00:23:39,320
na flip kurasa 1,000 kupata Mike Smith.

540
00:23:39,320 --> 00:23:42,319
Wengi kila mtu katika chumba hii ni kwenda
kufanya takribani aina hiyo ya algorithm

541
00:23:42,319 --> 00:23:43,220
ila kwa kuchanika.

542
00:23:43,220 --> 00:23:45,480
>> Na hivyo kwa nini sisi kufanya hivyo?

543
00:23:45,480 --> 00:23:47,810
Hebu fikiria ufanisi.

544
00:23:47,810 --> 00:23:51,500
Fikiria tu kiasi gani bora hii
algorithm alikuwa na kuvunja ni chini

545
00:23:51,500 --> 00:23:52,890
katika sehemu sehemu yake.

546
00:23:52,890 --> 00:23:53,980
Hivyo nini mimi kwanza kufanya?

547
00:23:53,980 --> 00:23:55,389
Mimi ilichukua kitabu cha simu.

548
00:23:55,389 --> 00:23:57,180
Na mwanasayansi wa kompyuta,
na programu,

549
00:23:57,180 --> 00:24:00,090
zaidi kwa ujumla ni zamu nje, ni kwenda
kuanza kuhesabu kila kitu katika 0.

550
00:24:00,090 --> 00:24:00,610
>> Kwa nini?

551
00:24:00,610 --> 00:24:03,240
Naam, ni ajabu kidogo
kwamba sisi wanadamu kuhesabu, kwa ujumla,

552
00:24:03,240 --> 00:24:04,400
kuanzia moja.

553
00:24:04,400 --> 00:24:08,110
Kwa sababu nini idadi ndogo
tunaweza wazi yanawakilisha msingi

554
00:24:08,110 --> 00:24:09,930
hata kwenye math wetu wa kale daraja shule?

555
00:24:09,930 --> 00:24:12,400
Naam, ilikuwa 0, iwe
ni katika decimal au mapacha.

556
00:24:12,400 --> 00:24:14,900
Na hivyo utaona katika dunia
ya kompyuta na programu,

557
00:24:14,900 --> 00:24:17,620
hasa, sisi kuanza
kuhesabu kila kitu kutoka 0.

558
00:24:17,620 --> 00:24:19,690
>> Hivyo mimi ilichukua kitabu cha simu hatua 0.

559
00:24:19,690 --> 00:24:21,924
Mimi nina kwenda kufungua kwa
katikati ya kitabu cha simu.

560
00:24:21,924 --> 00:24:23,840
Na kwamba ni kweli
usemi wa nini mimi.

561
00:24:23,840 --> 00:24:25,900
Na kisha hatua mbili alikuwa kuangalia majina.

562
00:24:25,900 --> 00:24:29,110
Hatua ya tatu ni kidogo
tofauti conceptually.

563
00:24:29,110 --> 00:24:30,600
Najiuliza swali.

564
00:24:30,600 --> 00:24:33,610
Kama Smith ni miongoni mwa majina,
Mimi nina kwenda kufanya uamuzi.

565
00:24:33,610 --> 00:24:36,550
Kama yeye ni miongoni mwa majina,
basi mimi nina kwenda kuwaita Mike.

566
00:24:36,550 --> 00:24:39,590
Na mimi nina kwenda kufanya uamuzi
kuzingatia kwamba kipande cha habari.

567
00:24:39,590 --> 00:24:44,100
>> Hata hivyo, kama si, kama Smith ni
mapema katika kitabu kwa upande wa kushoto,

568
00:24:44,100 --> 00:24:48,200
Mimi nina kwenda kufungua katikati
ya nusu ya kushoto ya kitabu.

569
00:24:48,200 --> 00:24:51,674
Na kisha hapa ni ujanja,
Mimi nina kwenda nyuma hatua mbili.

570
00:24:51,674 --> 00:24:53,590
Mimi nina kwenda kwa aina ya
kusimama juu ya mabega yangu mwenyewe

571
00:24:53,590 --> 00:24:55,110
na kurudia tu kazi siku za nyuma mimi.

572
00:24:55,110 --> 00:24:58,062
Lakini kazi mimi wameondoka ni
chini, na kidogo, na kidogo.

573
00:24:58,062 --> 00:24:59,270
Lakini ni bado kwenda kufanya kazi.

574
00:24:59,270 --> 00:25:02,110
Lakini kama Mike, badala yake, ni baadaye
katika kitabu kwa haki,

575
00:25:02,110 --> 00:25:04,980
Mimi nina kwenda kufungua katikati
ya nusu haki ya kitabu,

576
00:25:04,980 --> 00:25:07,240
kisha kwenda nyuma ya hatua mbili.

577
00:25:07,240 --> 00:25:09,330
>> Lakini kuna kweli mazingira ya nne.

578
00:25:09,330 --> 00:25:13,336
Mike aidha hapa,
au hapa, au hapa, or--

579
00:25:13,336 --> 00:25:14,152
>> STUDENT: Si huko.

580
00:25:14,152 --> 00:25:15,110
DAVID Malan: Si huko.

581
00:25:15,110 --> 00:25:18,580
Na hakika, kama hatuna wanatarajia
hii scenario nne na ya mwisho

582
00:25:18,580 --> 00:25:21,510
mpango wetu inaweza kuwa buggy
au kiujanja kwa namna fulani.

583
00:25:21,510 --> 00:25:25,020
Kingine, kujiondoa katika kesi hiyo
sisi sikuona Mike wakati wote.

584
00:25:25,020 --> 00:25:27,720
Na hakika, kama wameweza milele niliona
kompyuta yako kunyongwa, au yote

585
00:25:27,720 --> 00:25:30,490
ya neno ghafla au nyingine
mpango tu quits bila kutarajia,

586
00:25:30,490 --> 00:25:32,614
na wakati mwingine nawe makosa
ujumbe ni literally hiyo.

587
00:25:32,614 --> 00:25:34,070
Mpango huu kujiondoa bila kutarajia.

588
00:25:34,070 --> 00:25:35,570
Ni inaweza kuwa kwa idadi yoyote ya sababu.

589
00:25:35,570 --> 00:25:38,120
Lakini wakati mwingine ni
kitu rahisi kama hii.

590
00:25:38,120 --> 00:25:40,440
programu binadamu
aliyeandika programu ambayo

591
00:25:40,440 --> 00:25:43,610
hawakujua kwamba, loo, kuna
nje kitu ambayo yanaweza kweli kutokea.

592
00:25:43,610 --> 00:25:46,480
Na kama huna kuandika kanuni na
kukamata kwamba mazingira ya nne,

593
00:25:46,480 --> 00:25:51,342
ni kweli isiyotarajiwa wakati mwingine
nini kompyuta inaweza kweli kufanya.

594
00:25:51,342 --> 00:25:53,050
Sasa hebu kuita
baadhi ya mambo haya.

595
00:25:53,050 --> 00:25:55,465
Hivyo katika njano hapa, mimi
kuwa suala yalionyesha

596
00:25:55,465 --> 00:25:57,590
tangu sasa tuko tu
kwenda kuwaita kazi.

597
00:25:57,590 --> 00:26:00,700
Kazi katika ulimwengu wa
Programu ni kama vitendo,

598
00:26:00,700 --> 00:26:01,850
kauli ya vitendo.

599
00:26:01,850 --> 00:26:05,720
Hivyo kuchukua sheria, wazi kwa, kuangalia
katika, piga, wazi, wazi, kuacha.

600
00:26:05,720 --> 00:26:09,350
Hiyo ni kazi, utaratibu,
hatua, idadi yoyote ya visawe

601
00:26:09,350 --> 00:26:10,184
ingekuwa kazi kama vile.

602
00:26:10,184 --> 00:26:11,850
Sasa nini ni mambo haya sasa katika njano?

603
00:26:11,850 --> 00:26:14,210
Kama mwingine, kama mwingine, kama
mwingine, haya ni nini

604
00:26:14,210 --> 00:26:16,500
sisi ni kwenda kuwaita
hali katika programu,

605
00:26:16,500 --> 00:26:19,270
au matawi, uamuzi
inaelekeza, kama wewe.

606
00:26:19,270 --> 00:26:22,759
Lakini jinsi gani unajua ambayo uma
katika barabara kuchukua, hivyo kusema?

607
00:26:22,759 --> 00:26:24,550
Tunahitaji kuonyesha
suala na haki

608
00:26:24,550 --> 00:26:27,570
huko, ndiyo haya
ndiyo, hakuna maswali.

609
00:26:27,570 --> 00:26:29,040
Hizi kweli maswali ya uongo.

610
00:26:29,040 --> 00:26:30,880
Smith miongoni mwa majina?

611
00:26:30,880 --> 00:26:32,190
Smith mapema katika kitabu?

612
00:26:32,190 --> 00:26:33,260
Smith baadaye katika kitabu?

613
00:26:33,260 --> 00:26:35,490
Haya ni maswali ya
ambayo kuna ni ndiyo, au hapana,

614
00:26:35,490 --> 00:26:42,110
au equivalently kweli, au uongo, au
equivalently, jibu moja au sifuri.

615
00:26:42,110 --> 00:26:44,260
>> Na wakati huo huo kuna
moja tu iliyopita kipande.

616
00:26:44,260 --> 00:26:45,940
Hii hapa ina aina gani ya athari?

617
00:26:45,940 --> 00:26:48,230
Kama au wewe mpango
kabla, jinsi gani wewe

618
00:26:48,230 --> 00:26:51,030
kueleza kile hatua
saba na 10 wanafanya?

619
00:26:51,030 --> 00:26:54,110

620
00:26:54,110 --> 00:26:55,027
Ulisema nini?

621
00:26:55,027 --> 00:26:56,110
STUDENT: hatua ya kujirudia.

622
00:26:56,110 --> 00:26:56,980
DAVID Malan: hatua ya kujirudia.

623
00:26:56,980 --> 00:26:58,000
Ndiyo, kimsingi.

624
00:26:58,000 --> 00:27:00,384
Ni kitaalam iterative
hapa kama wewe ni ukoo.

625
00:27:00,384 --> 00:27:01,550
Lakini tutaweza kuja nyuma na kwamba.

626
00:27:01,550 --> 00:27:03,930
Lakini ni kufanya kitu wazi.

627
00:27:03,930 --> 00:27:06,370
Tena, ni inducing
mzunguko, kitanzi, haki.

628
00:27:06,370 --> 00:27:08,770
Wewe ni literally kwenda
nyuma kwa hatua baadhi mapema.

629
00:27:08,770 --> 00:27:12,592
Na hivyo kweli kweli, hii ni kwenda
kutekeleza baadhi ya aina ya mzunguko.

630
00:27:12,592 --> 00:27:15,050
Lakini wewe si kwenda kupata
kukwama katika hii bila kukoma, haki.

631
00:27:15,050 --> 00:27:19,290
Kwa sababu kama wewe ni mara kwa mara kuangalia ni
Mike hapa, au wa kushoto, au si hapa,

632
00:27:19,290 --> 00:27:21,360
hatimaye yeye si kwenda kuwa huko.

633
00:27:21,360 --> 00:27:24,590
Na unaweza tu kuacha kabisa
kama kwa kuwa mstari wa mwisho.

634
00:27:24,590 --> 00:27:25,834
>> Hivyo hiyo ni kwa msamiati.

635
00:27:25,834 --> 00:27:28,250
Na hii ilikuwa ni nini tunataka
ujumla kuwaita pseudocode kificho.

636
00:27:28,250 --> 00:27:29,570
Siyo lugha halisi.

637
00:27:29,570 --> 00:27:32,405
Ni tu fupi sana Kiingereza,
lakini ni mawasiliano ya uhakika.

638
00:27:32,405 --> 00:27:33,780
Hakuna muundo rasmi hapa.

639
00:27:33,780 --> 00:27:35,738
Wewe tu kutumia ni chache
maneno, lakini maneno kama wazi

640
00:27:35,738 --> 00:27:37,870
kama unaweza kuwasiliana wazo lako.

641
00:27:37,870 --> 00:27:40,580
>> Sasa jinsi nzuri ni kwamba algorithm
na ni kiasi gani bora ni nini?

642
00:27:40,580 --> 00:27:43,570
Naam, hatuna kupata katika
specifics ya namba au kitu chochote

643
00:27:43,570 --> 00:27:44,069
kama hiyo.

644
00:27:44,069 --> 00:27:46,300
Lakini tunaweza kuangalia
sura ya ufumbuzi huu.

645
00:27:46,300 --> 00:27:50,194
Hivyo kama sisi tu kuteka baadhi ya njama xy
hapa kwenye mhimili usawa hapa.

646
00:27:50,194 --> 00:27:51,860
Hebu tu kuwaita ukubwa wa tatizo.

647
00:27:51,860 --> 00:27:55,540
Na mwanasayansi wa kompyuta ingekuwa
kawaida kutumia n kama kutofautiana hapa.

648
00:27:55,540 --> 00:27:59,690
Hivyo n kurasa, au n watu katika chumba, au
chochote ni wewe ni kujaribu kuhesabu.

649
00:27:59,690 --> 00:28:03,039
>> Na kisha juu ya mhimili wima juu ya
kushoto, kwamba itakuwa muda wa kutatua.

650
00:28:03,039 --> 00:28:05,330
Hivyo ni jinsi sekunde nyingi anafanya hivyo
kuchukua yangu kupata Mike Smith?

651
00:28:05,330 --> 00:28:06,621
Au jinsi hatua nyingi gani kuchukua?

652
00:28:06,621 --> 00:28:08,100
Ni wangapi ukurasa zamu gani kuchukua?

653
00:28:08,100 --> 00:28:11,370
Hivyo hiyo ni kiasi gani cha gharama
mimi katika muda wa kutatua tatizo.

654
00:28:11,370 --> 00:28:15,030
Na tupate kuteka kwanza
algorithms mteremko, kama wewe,

655
00:28:15,030 --> 00:28:16,910
kama tu mstari huu moja kwa moja katika nyekundu.

656
00:28:16,910 --> 00:28:18,450
Na mimi itabidi kuiita n.

657
00:28:18,450 --> 00:28:19,117
>> Kwa nini n?

658
00:28:19,117 --> 00:28:20,950
Kwa nini ni tu hii moja
kwa uhusiano wa mtu?

659
00:28:20,950 --> 00:28:22,700
Naam, kama Verizon au
chochote kampuni ya simu

660
00:28:22,700 --> 00:28:25,130
anaongeza moja zaidi ukurasa wa
kitabu cha simu mwakani,

661
00:28:25,130 --> 00:28:28,370
ambayo inaweza kushinikiza Mike moja
hatua zaidi karibu na mwisho,

662
00:28:28,370 --> 00:28:29,950
kulingana na pale ukurasa kwamba ni.

663
00:28:29,950 --> 00:28:32,380
Na hivyo athari ili tu
kuwa kuongeza moja zaidi ya pili.

664
00:28:32,380 --> 00:28:33,520
Au moja zaidi ukurasa upande.

665
00:28:33,520 --> 00:28:34,970
moja kwa uwiano moja.

666
00:28:34,970 --> 00:28:37,410
>> Kwa upande mwingine, algorithm pili.

667
00:28:37,410 --> 00:28:41,406
Kiasi gani kasi ni kwamba intuitively?

668
00:28:41,406 --> 00:28:42,780
Ambapo nilikwenda kurasa mbili kwa wakati mmoja?

669
00:28:42,780 --> 00:28:43,664
Yeah.

670
00:28:43,664 --> 00:28:44,497
>> STUDENT: [inaudible]

671
00:28:44,497 --> 00:28:47,255

672
00:28:47,255 --> 00:28:48,080
>> DAVID Malan: Yeah.

673
00:28:48,080 --> 00:28:49,220
Hivyo ni kwenda kuwa mara mbili kwa haraka.

674
00:28:49,220 --> 00:28:51,344
Na tunataka kuteka kwamba hapa
kutegemea wadogo.

675
00:28:51,344 --> 00:28:54,220
Bado ni mstari sawa,
lakini chini ya mstari mwekundu.

676
00:28:54,220 --> 00:28:56,410
Kwa sababu kwa idadi baadhi
ya kurasa, kama inachukua

677
00:28:56,410 --> 00:28:58,360
wewe hii hatua nyingi na
algorithm kwanza,

678
00:28:58,360 --> 00:29:00,570
ni kwenda kuchukua wewe nusu
kama hatua nyingi na la pili.

679
00:29:00,570 --> 00:29:02,770
Na hivyo line njano
kuelezea algorithm pili

680
00:29:02,770 --> 00:29:03,990
ni kwenda tu kuwa chini yake.

681
00:29:03,990 --> 00:29:07,250
>> Lakini nini kweli nguvu ni
kufikiri juu ya tatu na ya mwisho,

682
00:29:07,250 --> 00:29:10,480
na kushangaza wengi Intuitive
algorithm, ambayo ina sura hii.

683
00:29:10,480 --> 00:29:12,720
Kitaalam tunataka kuwaita
hii logarithmic Curve.

684
00:29:12,720 --> 00:29:14,309
Kuingia msingi 2 ya n katika kesi hii.

685
00:29:14,309 --> 00:29:15,600
Lakini hiyo haina kweli jambo.

686
00:29:15,600 --> 00:29:19,140
Yale mambo kweli ni kimsingi
sura tofauti kwamba ina.

687
00:29:19,140 --> 00:29:22,810
Na unaweza kufikiria tu jinsi
mfupi sana mstari huu kweli

688
00:29:22,810 --> 00:29:24,620
ni katika muda mrefu.

689
00:29:24,620 --> 00:29:25,870
Ni inazidi kuongezeka.

690
00:29:25,870 --> 00:29:27,620
Haina flatten nje kikamilifu.

691
00:29:27,620 --> 00:29:34,030
Lakini ni kukua milele sana polepole zaidi
kama tatizo anapata makubwa na kubwa.

692
00:29:34,030 --> 00:29:36,710
Na unaweza kufikiria ni hii
way-- kama Verizon hana tu

693
00:29:36,710 --> 00:29:40,410
kuongeza ukurasa mmoja mwaka ujao lakini DOUBLES
idadi ya kurasa katika kitabu cha simu,

694
00:29:40,410 --> 00:29:42,740
algorithm kwanza wapate
kuchukua mara mbili kama hatua nyingi.

695
00:29:42,740 --> 00:29:45,360
Kama ni 1,000 kurasa hii
mwaka, 2000 kurasa mwaka ujao,

696
00:29:45,360 --> 00:29:47,180
Mike inaweza kuwa kwamba mengi mbali mbali.

697
00:29:47,180 --> 00:29:49,380
Hivyo ni 1,000 hatua za ziada kwa kumpata.

698
00:29:49,380 --> 00:29:51,610
algorithm pili
inaweza kuwa 500 tu zaidi

699
00:29:51,610 --> 00:29:55,490
hatua ya kumpata kwa sababu tena,
Mimi nina kuruka kwa njia hiyo mbili kwa wakati.

700
00:29:55,490 --> 00:29:56,950
>> Lakini nini kuhusu algorithm tatu?

701
00:29:56,950 --> 00:29:59,010
Kama Verizon mara mbili
ukubwa wa kitabu cha simu

702
00:29:59,010 --> 00:30:02,620
mwaka ujao kutoka 1,000 hadi 2000
kurasa, wangapi hatua zaidi

703
00:30:02,620 --> 00:30:05,540
ni algorithm yangu ya tatu kwenda kuchukua?

704
00:30:05,540 --> 00:30:06,630
Yeah, ni moja tu.

705
00:30:06,630 --> 00:30:08,600
Na kwamba ni wazo lenye nguvu.

706
00:30:08,600 --> 00:30:12,780
Unaweza kuchukua 1,000 ukurasa bite
nje ya tatizo kwamba mara moja.

707
00:30:12,780 --> 00:30:14,510
Na sasa kama wewe kufikiria
scenario silly,

708
00:30:14,510 --> 00:30:17,320
lakini ni aina ya anaongea na
nguvu ya aina hii ya intuition--

709
00:30:17,320 --> 00:30:21,494
kama kitabu cha simu alikuwa, kama, bilioni nne
kurasa, anahisi kama tatizo kubwa kweli kweli.

710
00:30:21,494 --> 00:30:23,410
Na hakika, ni nguvu
kuchukua yangu ukurasa bilioni nne

711
00:30:23,410 --> 00:30:26,549
anarudi kwa kupata Mike Smith katika kwamba
kesi na algorithm kwanza.

712
00:30:26,549 --> 00:30:28,840
Lakini jinsi hatua nyingi ingekuwa ni
kuchukua katika algorithm tatu

713
00:30:28,840 --> 00:30:31,585
kupata Mike miongoni mwa nne
bilioni vipande vya karatasi?

714
00:30:31,585 --> 00:30:34,865

715
00:30:34,865 --> 00:30:36,240
Hivyo bilioni nne machozi katika nusu.

716
00:30:36,240 --> 00:30:37,220
Unaweza kupata bilioni mbili.

717
00:30:37,220 --> 00:30:42,810
Kisha bilioni moja, basi milioni 500,
milioni 250, 125 million-- lakini

718
00:30:42,810 --> 00:30:44,780
anahisi kama hii ni
kwenda kuchukua muda.

719
00:30:44,780 --> 00:30:47,340
Nipate haja vidole 32
kuhesabu up kuwa juu.

720
00:30:47,340 --> 00:30:51,340
Lakini ni kweli kama
wachache kama 32 ukurasa machozi.

721
00:30:51,340 --> 00:30:54,060
Unaweza kwenda kutoka nne
bilioni kwa ukurasa mmoja wa kugawa

722
00:30:54,060 --> 00:30:57,030
awali idadi ya
kurasa katika nusu 32 mara

723
00:30:57,030 --> 00:30:59,290
mpaka wewe ni wa kushoto na
tu kwamba ukurasa mmoja.

724
00:30:59,290 --> 00:31:01,320
>> Sasa, bila shaka, mimi nina cheating hapa.

725
00:31:01,320 --> 00:31:06,470
Siyo kwamba sisi ni kuwa tu aina
ya kijinga kabisa na mbili za kwanza

726
00:31:06,470 --> 00:31:07,470
algorithms.

727
00:31:07,470 --> 00:31:11,500
Mimi udanganyifu katika baadhi ya hisia, au
kweli mimi nina leveraging dhana.

728
00:31:11,500 --> 00:31:15,610
Nini ilikuwa kweli kuhusu kitabu cha simu
katika fomu yake ya awali kwamba kuruhusiwa

729
00:31:15,610 --> 00:31:17,450
mimi hata kutumia kwamba algorithm tatu?

730
00:31:17,450 --> 00:31:18,110
Yeah?

731
00:31:18,110 --> 00:31:19,360
Watazamaji: Ilikuwa alphabetized.

732
00:31:19,360 --> 00:31:21,130
DAVID Malan: Ilikuwa alphabetized, haki?

733
00:31:21,130 --> 00:31:23,500
Kama ilivyokuwa tu katika random
ili, hii ni kupoteza

734
00:31:23,500 --> 00:31:24,880
cha muda, mazungumzo haya yote.

735
00:31:24,880 --> 00:31:27,500
Nina kuangalia kila
ukurasa ikiwa ni katika mpangilio maalum

736
00:31:27,500 --> 00:31:30,350
kupata Mike Smith kabla ya mimi
anaweza kuhitimisha yeye ni huko au la.

737
00:31:30,350 --> 00:31:32,880
Na hivyo kona sisi
kuwakatilia ni kwamba nina

738
00:31:32,880 --> 00:31:35,752
kudhani kuwa mtu mwingine katika
kesi hii alifanya kazi kwa ajili yangu.

739
00:31:35,752 --> 00:31:38,460
Na ili hatimaye mialiko
swali, vizuri, kusubiri dakika.

740
00:31:38,460 --> 00:31:41,284
Jinsi gani unaweza kutatua 1,000
kurasa za majina na namba?

741
00:31:41,284 --> 00:31:43,200
Hiyo ni kweli tofauti
tatizo, kitu

742
00:31:43,200 --> 00:31:44,574
tutaweza kurudi katika siku zijazo.

743
00:31:44,574 --> 00:31:48,130
Lakini wakati unafikiri kuhusu tovuti
kama Facebook na Google kwa Gmail

744
00:31:48,130 --> 00:31:50,450
na mambo kama Google
bahati search wenyewe,

745
00:31:50,450 --> 00:31:53,800
wakati una mamilioni au mabilioni ya
vipande vya data kuwa kuhifadhiwa siku hizi,

746
00:31:53,800 --> 00:31:56,660
searching-- na sembuse
Uamuzi problems-- wale

747
00:31:56,660 --> 00:31:59,450
ni hatimaye changamoto kwa yenyewe.

748
00:31:59,450 --> 00:32:02,250
Na hakika, hii ni kisha
moja tu ya changamoto hizo

749
00:32:02,250 --> 00:32:03,460
kwamba tutaweza kuwa na kuangalia.

750
00:32:03,460 --> 00:32:05,590
>> Hivyo sasa hebu kuchukua muda
na tuangalie CS50

751
00:32:05,590 --> 00:32:09,082
yenyewe na kukupa hisia ya
nini katika kuhifadhi muhula huu.

752
00:32:09,082 --> 00:32:11,540
Hakika, kama wewe si tayari,
je tuangalie URL hii.

753
00:32:11,540 --> 00:32:13,880
Na kama Patrick alidokeza
kwa mwaka huu tuko

754
00:32:13,880 --> 00:32:17,130
kufanya uwekezaji mkubwa zote
zaidi katika msaada kozi ya

755
00:32:17,130 --> 00:32:20,170
muundo katika suala la TAS
na CAS, masaa ya ofisi,

756
00:32:20,170 --> 00:32:23,520
sehemu upatikanaji, na
vifaa digital online, kama vile.

757
00:32:23,520 --> 00:32:27,489
Hakika, katika suala la kozi ya
hotuba, tuko hapa leo.

758
00:32:27,489 --> 00:32:29,780
Na matarajio hii
mwaka rasmi bila shaka

759
00:32:29,780 --> 00:32:32,370
ni kuhudhuria kwa leo, kozi ya
mwisho hotuba, na bila shaka

760
00:32:32,370 --> 00:32:35,161
takribani katikati ya muhula
na kila hotuba katika kati

761
00:32:35,161 --> 00:32:37,280
yanapatikana kwa ujumla
juu ya Ijumaa alasiri

762
00:32:37,280 --> 00:32:40,240
online, wote kwa ajili Yale wanafunzi
na wanafunzi Harvard mwaka huu.

763
00:32:40,240 --> 00:32:42,090
Hakika, moja ya
mabadiliko ya msingi ni

764
00:32:42,090 --> 00:32:44,310
kwamba sisi ni kupitisha katika
Harvard dhana sana

765
00:32:44,310 --> 00:32:46,570
kama tulivyofanya hapa jana
mwaka na sasa mwaka huu,

766
00:32:46,570 --> 00:32:50,300
ili vile vile, sisi bado filamu zaidi
wa mihadhara kozi ya Cambridge

767
00:32:50,300 --> 00:32:52,900
lakini kuwafanya inapatikana mapema
kuliko sisi katika siku za nyuma

768
00:32:52,900 --> 00:32:55,540
Basi, wale walio you-- kama wewe
wangependa, kwa mfano,

769
00:32:55,540 --> 00:32:58,400
kupata kuanza kichwa juu ya vifaa
mwishoni mwa wiki ya kwanza badala

770
00:32:58,400 --> 00:33:02,000
kuliko wiki ya pili, itabidi
upatikanaji wa aina hii ya vifaa,

771
00:33:02,000 --> 00:33:06,561
kutafutwa, embeddable, hyperlinkable
kwa rasilimali kuhusiana zote mapema.

772
00:33:06,561 --> 00:33:09,560
Katika suala la mada, kukupa
hisia ya trajectory-- kozi ya

773
00:33:09,560 --> 00:33:12,365
na baadhi ya hii inaweza kuwa jargon kwa
sasa, lakini si kwa muda mrefu, mapumziko uhakika.

774
00:33:12,365 --> 00:33:15,010
Tutaweza kuanza leo, hatimaye,
na kuangalia programu moja

775
00:33:15,010 --> 00:33:16,260
lugha inayoitwa Scratch.

776
00:33:16,260 --> 00:33:19,380
Tutaweza mpito baada ya hapo
wiki ijayo kitu kinachoitwa C

777
00:33:19,380 --> 00:33:22,140
na kisha kuangalia jengo nyingine
vitalu kwa ajili ya kutatua matatizo,

778
00:33:22,140 --> 00:33:26,230
mambo kuitwa arrays na algorithms,
jinsi sisi kutumia kumbukumbu kwa faida yetu

779
00:33:26,230 --> 00:33:28,326
na hasara, na
mambo kama miundo data,

780
00:33:28,326 --> 00:33:31,200
na kisha kuelekea mwisho wa mkia
darasani kuangalia kujifunza mashine

781
00:33:31,200 --> 00:33:33,410
na kuangalia mwingine
lugha inayoitwa Python,

782
00:33:33,410 --> 00:33:37,460
jinsi mtandao kazi, jinsi biashara zaidi
ujumla kazi, itifaki kama HTTP,

783
00:33:37,460 --> 00:33:40,950
Lugha kwa database kama
SQL, JavaScript kwa ajili ya mtandao,

784
00:33:40,950 --> 00:33:43,000
na hatimaye anafunga
wale wote kwa pamoja.

785
00:33:43,000 --> 00:33:44,708
>> Na hivyo kweli kweli, katika
mwisho wa siku, wewe

786
00:33:44,708 --> 00:33:50,250
si kujifunza katika Scratch hii darasani
au C au chatu au SQL au JavaScript.

787
00:33:50,250 --> 00:33:53,560
Utakuwa badala ujumla zaidi kujifunza
sayansi ya kompyuta na misingi

788
00:33:53,560 --> 00:33:55,790
yake, na wewe
kujifunza jinsi ya mpango

789
00:33:55,790 --> 00:33:58,800
katika idadi yoyote ya hizi
Lugha njiani.

790
00:33:58,800 --> 00:34:00,970
Hivyo kweli, moja ya malengo
bila shaka katika mwisho

791
00:34:00,970 --> 00:34:04,160
ni kuchukua mbali yote ya kozi ya
magurudumu mafunzo na wiki hizo mwisho

792
00:34:04,160 --> 00:34:06,710
ili kwamba baada ya hii, unaweza
kurudi fields-- yako mwenyewe

793
00:34:06,710 --> 00:34:08,510
kama kwamba ni au ni
si sayansi ya kompyuta

794
00:34:08,510 --> 00:34:12,290
au uhandisi, katika asili
sayansi, sanaa, masomo ya kibinadamu, au beyond--

795
00:34:12,290 --> 00:34:14,720
na kuleta baadhi ya hii
mawazo kozi na uwanja huu wa

796
00:34:14,720 --> 00:34:17,400
mawazo na vitendo
ujuzi wa domain yako mwenyewe

797
00:34:17,400 --> 00:34:19,480
ili kutatua matatizo hayo.

798
00:34:19,480 --> 00:34:22,990
>> Nini tutaweza kufanya hapa wakati huo huo
katika Alhamisi zaidi baada ya leo

799
00:34:22,990 --> 00:34:26,160
ni pamoja na vichwa kozi ya kuongoza
nini tutaweza kuwaita walkthroughs

800
00:34:26,160 --> 00:34:27,620
ya seti tatizo kozi.

801
00:34:27,620 --> 00:34:29,610
Hivyo kila wiki wakati sisi
kuwa tatizo kuweka, tutaweza

802
00:34:29,610 --> 00:34:32,900
kuwa kutembea kupitia katika eneo
kama hii changamoto kozi ya,

803
00:34:32,900 --> 00:34:35,582
sadaka wewe baadhi ya vidokezo na
mbinu na mbinu za kubuni.

804
00:34:35,582 --> 00:34:37,540
Lakini kama huna uwezo
kufanya wale katika mtu,

805
00:34:37,540 --> 00:34:39,760
kutambua hizo hizo
rasilimali itakuwa iliyoingia

806
00:34:39,760 --> 00:34:41,590
na mmoja wa kozi ya
walimu wasaidizi

807
00:34:41,590 --> 00:34:43,860
katika tatizo seti wenyewe, kama vile.

808
00:34:43,860 --> 00:34:47,124
>> tatizo seti mwaka huu, tofauti na
mwaka jana, kulingana na maoni,

809
00:34:47,124 --> 00:34:48,540
bado kuwa iliyotolewa siku ya Ijumaa.

810
00:34:48,540 --> 00:34:51,310
Lakini badala ya kuwa kutokana
baadae Ijumaa,

811
00:34:51,310 --> 00:34:55,079
hivyo kutoa wewe siku saba tu,
ufanisi kuwa kutokana siku 10 baadaye.

812
00:34:55,079 --> 00:34:57,620
Na hakika, hii ina maana kwamba
wao itabidi kuingiliana na mwishoni mwa wiki.

813
00:34:57,620 --> 00:34:59,369
Lakini tunatarajia mwaka huu
hasa hii mapenzi

814
00:34:59,369 --> 00:35:02,320
kuruhusu wanafunzi na bora malazi
pwa na mtiririko katika ratiba yao,

815
00:35:02,320 --> 00:35:05,040
kama ni wasomi au
extracurriculars au riadha

816
00:35:05,040 --> 00:35:06,280
au midterm msimu.

817
00:35:06,280 --> 00:35:10,060
Unaweza ama mbele-mzigo au nyuma-mzigo
wiki yako kulenga CS50 msingi

818
00:35:10,060 --> 00:35:12,400
juu ya kozi halisi mzigo wiki yako mwenyewe.

819
00:35:12,400 --> 00:35:14,990
>> tatizo seti wenyewe
itafikia mbalimbali ya lugha,

820
00:35:14,990 --> 00:35:17,990
ingawa tutaweza kuzingatia
unategemea mapema juu ya C

821
00:35:17,990 --> 00:35:23,040
kabla ya sisi kuzingatia baada ya hapo juu juu
ngazi ya juu, zaidi lugha web-centric.

822
00:35:23,040 --> 00:35:25,970
Na kisha michache ya FAQs here--
lazima wewe kuchukua darasa kama CS50

823
00:35:25,970 --> 00:35:26,900
kama mwaka wa kwanza?

824
00:35:26,900 --> 00:35:27,970
Hivyo kabisa.

825
00:35:27,970 --> 00:35:30,470
Na hakika, siyo
lazima kitu

826
00:35:30,470 --> 00:35:34,440
unapaswa kuahirisha mpaka umefanya kukatwa
meno yako juu ya aina nyingine ya madarasa.

827
00:35:34,440 --> 00:35:36,290
Lakini badala yake, kufikiria
kwamba kwa wanafunzi wengi,

828
00:35:36,290 --> 00:35:39,040
mimi mwenyewe pamoja nyuma katika siku,
hii ni shamba usio wa kawaida sana,

829
00:35:39,040 --> 00:35:40,997
hasa kama wewe
kamwe alifanya kuchukua AP CSA

830
00:35:40,997 --> 00:35:42,580
au kitu kama hicho katika shule ya sekondari.

831
00:35:42,580 --> 00:35:44,705
Lakini kutambua kwamba mapema,
kama ni kozi hii

832
00:35:44,705 --> 00:35:47,900
au nyingine utangulizi shaka,
sasa ni kweli wakati bora,

833
00:35:47,900 --> 00:35:52,082
Nadhani, kupata baadhi ya njia mpya au
baadhi ya kielimu maslahi mpya, kama vile.

834
00:35:52,082 --> 00:35:55,040
Na kisha kuchukua kwa courses-- mengine
hivyo moja ya tofauti muhimu hapa

835
00:35:55,040 --> 00:35:57,906
dhidi ya Harvard ni kwamba sisi tu
kuchukua kozi nne kwa kila muhula

836
00:35:57,906 --> 00:35:59,030
katika Harvard kwa sababu fulani.

837
00:35:59,030 --> 00:36:01,494
Na wewe guys kweli kuvuta
mbali baadhi ya kozi 36 katika jumla

838
00:36:01,494 --> 00:36:04,410
katika kipindi cha miaka yako minne,
ambayo ina maana ujumla nne au tano

839
00:36:04,410 --> 00:36:05,040
madarasa.

840
00:36:05,040 --> 00:36:08,367
Na mimi nadhani ni haki kabisa kusema
na kwa WANAKANUSHA CS50, kwa kubuni, ni

841
00:36:08,367 --> 00:36:10,700
pengine si aina ya darasa
kwamba ni lazima kawaida

842
00:36:10,700 --> 00:36:13,680
kuchukua na wengine wanne
kozi kwa jumla ya tano

843
00:36:13,680 --> 00:36:16,249
kwa sababu psets ni kwa
kubuni haki mahututi.

844
00:36:16,249 --> 00:36:18,040
Kwa hakika, mimi pia kujifunza
nyuma hii katika siku.

845
00:36:18,040 --> 00:36:21,110
Napenda kuelezea CS50 na
sayansi ya kompyuta, programu

846
00:36:21,110 --> 00:36:24,477
kama kiasi ngumu kama
ni tu muda mwingi.

847
00:36:24,477 --> 00:36:26,560
Siyo aina ya kitu
ambapo baada ya chakula cha jioni, wewe

848
00:36:26,560 --> 00:36:28,310
unaweza kwenda nyuma ya Dorm yako
chumba, kukaa chini, na kuanza

849
00:36:28,310 --> 00:36:29,710
kulenga pset
kufikiri, sawa,

850
00:36:29,710 --> 00:36:31,340
Mimi nina gonna bang hii nje
usiku wa leo na kisha hoja

851
00:36:31,340 --> 00:36:33,000
juu ya somo yangu ijayo siku ya pili.

852
00:36:33,000 --> 00:36:34,450
Wakati mwingine wewe tu hit ukuta.

853
00:36:34,450 --> 00:36:35,690
Una mende katika kanuni yako.

854
00:36:35,690 --> 00:36:37,900
Wewe si lazima kujua
jinsi ya kutatua tatizo fulani.

855
00:36:37,900 --> 00:36:41,670
Na moja ya vipengele muhimu ya
programu kwa mwenyewe mpaka leo

856
00:36:41,670 --> 00:36:44,480
ni wewe tu aina ya haja ya kuchukua
hatua nyuma wakati mwingine, kulala juu yake

857
00:36:44,480 --> 00:36:47,870
au kufikiri juu yake juu ya mwendo
ya jog au baadhi ya shughuli nyingine,

858
00:36:47,870 --> 00:36:49,240
na kisha kuja nyuma yake safi.

859
00:36:49,240 --> 00:36:50,930
Na wewe tu haja madirisha haya ya muda.

860
00:36:50,930 --> 00:36:52,910
>> Na hakika, kwamba ni kwa nini tumekuwa
kurefushwa kiasi cha muda

861
00:36:52,910 --> 00:36:55,710
inapatikana kwa seti tatizo
mwaka huu na pia, per URL kwamba

862
00:36:55,710 --> 00:36:57,950
Mimi kuweka up mapema kama kwa
nini mpya muhula huu,

863
00:36:57,950 --> 00:37:00,950
trimmed tatizo seti ili
wao uko kimsingi hakuna chini ya ukali,

864
00:37:00,950 --> 00:37:03,741
na takeaways ni si chini, lakini
kuna mengi jambo chini mbele,

865
00:37:03,741 --> 00:37:07,630
mengi chini legwork kwamba unahitaji
kufanya mbele ya kila kuweka tatizo,

866
00:37:07,630 --> 00:37:10,680
kama utaona, kabla unaweza
kweli kupiga mbizi katika nyama yake.

867
00:37:10,680 --> 00:37:13,500
Hivyo kutambua kwamba wale na wengine
mabadiliko ni juu ya upeo

868
00:37:13,500 --> 00:37:16,490
na bora malazi ya wanafunzi,
lakini hatimaye kuhakikisha

869
00:37:16,490 --> 00:37:18,860
kwamba takeaways ni
Hakika kama juu kama iwezekanavyo.

870
00:37:18,860 --> 00:37:21,330
Hivyo wakati kazi zaidi kuliko
inaweza kuwa katika darasa ya kawaida,

871
00:37:21,330 --> 00:37:25,120
sisi matumaini kwamba anarudi kwa
wewe na takeaways kwa ajili yenu

872
00:37:25,120 --> 00:37:27,490
na ujuzi na mawazo
na ambayo kujinasua

873
00:37:27,490 --> 00:37:29,921
ni kulazimisha wote zaidi kama matokeo.

874
00:37:29,921 --> 00:37:32,420
Na kupata wewe there-- na hii
ni moja ya takeaways muhimu,

875
00:37:32,420 --> 00:37:35,470
kama Patrick alidokeza earlier-- ni
kozi ya muundo msaada.

876
00:37:35,470 --> 00:37:39,720
Hivyo si tu haina CS50 kuwa mmoja wa
kubwa fimbo shaka juu ya chuo.

877
00:37:39,720 --> 00:37:41,750
Pia ina moja ya
zaidi ya shahada ya kwanza.

878
00:37:41,750 --> 00:37:43,700
Hakika, CS50 mwaka jana
Ilikuwa darasa la kwanza

879
00:37:43,700 --> 00:37:45,366
kuwa na shahada ya kwanza wafanyakazi wa kufundisha.

880
00:37:45,366 --> 00:37:48,570
Na ushahidi wa mafanikio kwamba kufanya sasa
kozi nyingine nyingi ndani ya Yale CS

881
00:37:48,570 --> 00:37:49,500
na kwamba, kama vile.

882
00:37:49,500 --> 00:37:52,906
Na kwa wanafunzi, hasa,
mapenzi TAS hizi na bila shaka wasaidizi

883
00:37:52,906 --> 00:37:55,030
kuwa kusaidia nzima
mtandao wa rasilimali msaada,

884
00:37:55,030 --> 00:37:58,250
kati ya sehemu yao au
visomo, fursa ya kila wiki

885
00:37:58,250 --> 00:38:01,674
kuwa na majadiliano ionekane zaidi
na mapitio ya vifaa walengwa

886
00:38:01,674 --> 00:38:04,590
kwa nyimbo tofauti, kwa wanafunzi
chini ya starehe, vizuri zaidi,

887
00:38:04,590 --> 00:38:05,720
au mahali fulani katika kati.

888
00:38:05,720 --> 00:38:08,886
Hizi watafuata upatikanaji wa
mihadhara kwa siku kadhaa kila juma

889
00:38:08,886 --> 00:38:09,970
juu ya Jumatatu na Jumanne.

890
00:38:09,970 --> 00:38:11,970
Na kisha ofisi hours--
moja-on-moja fursa

891
00:38:11,970 --> 00:38:15,490
msaada kutoka kwa kozi CAS na TAS
itakuwa juu ya Jumatano na Alhamisi

892
00:38:15,490 --> 00:38:18,400
na Jumapili saa nyingi
mara, ambayo yote

893
00:38:18,400 --> 00:38:22,180
itakuwa posted kwenye tovuti kozi ya,
hata zaidi kuliko mwaka jana, pia.

894
00:38:22,180 --> 00:38:25,501
>> Lakini nini muhimu kwa CS50, kama
si admittedly kidogo kawaida,

895
00:38:25,501 --> 00:38:27,750
ni utamaduni shaka kwamba
tumekuwa alijaribu kulima,

896
00:38:27,750 --> 00:38:30,672
wote katika Cambridge kwa miaka mingi
na sasa hivi karibuni katika New Haven.

897
00:38:30,672 --> 00:38:33,130
Na kwa kweli, kuja juu hii
Jumamosi, kama wewe si habari,

898
00:38:33,130 --> 00:38:36,410
ni Siku ya CS50 Puzzle, ambayo ina
kitu cha kufanya na sayansi ya kompyuta

899
00:38:36,410 --> 00:38:39,430
lakini ni kabisa iliyoundwa na kutuma
ujumbe kwamba sayansi ya kompyuta ni

900
00:38:39,430 --> 00:38:40,665
kuhusu utatuzi wa matatizo.

901
00:38:40,665 --> 00:38:43,540
Na hakika, kama Ningependa mpenzi
na moja au mbili au tatu marafiki

902
00:38:43,540 --> 00:38:46,150
na kuunda timu kwa CS50
Puzzle Day, tuangalie

903
00:38:46,150 --> 00:38:48,010
katika matangazo kwamba ni juu ya njia ya nje.

904
00:38:48,010 --> 00:38:51,582
Na masaa matatu ya pizza na
puzzles na zawadi wakisubiri.

905
00:38:51,582 --> 00:38:53,290
Na hakika, kwa
mara ya kwanza mwaka huu,

906
00:38:53,290 --> 00:38:54,873
itakuwa si wanamiliki pamoja na Harvard.

907
00:38:54,873 --> 00:38:57,530
Itakuwa hapa kujitegemea katika Yale.

908
00:38:57,530 --> 00:38:59,815
Hivyo kuweka jicho nje kwa ajili ya
wale kama una si.

909
00:38:59,815 --> 00:39:02,440
Wengi kila Ijumaa katika muhula
Je, sisi kujaribu kufanya tabaka la big

910
00:39:02,440 --> 00:39:06,710
kujisikia ndogo na kuleta baadhi ya wanafunzi 50
chakula cha mchana na wafanyakazi kozi ya,

911
00:39:06,710 --> 00:39:08,730
na Mbegu, marafiki
kutoka sekta ya kuzungumza

912
00:39:08,730 --> 00:39:12,630
kuhusu nini maisha ni kama baada ya
darasani kama CS50 na zaidi msimu

913
00:39:12,630 --> 00:39:14,250
na baada ya kuhitimu.

914
00:39:14,250 --> 00:39:16,280
Hivyo kuweka jicho nje kwa ajili ya
mialiko ya hiyo.

915
00:39:16,280 --> 00:39:17,988
Kwa mara ya kwanza
milele mwaka huu sisi

916
00:39:17,988 --> 00:39:21,420
kushikilia kwanza milele CS50 coding
mashindano, hiari opt-katika nafasi

917
00:39:21,420 --> 00:39:25,580
katikati ya muhula, baada ya sisi sote kuwa na
baadhi ya wiki sita au saba ya programu

918
00:39:25,580 --> 00:39:30,100
katika C chini ya mikanda yao kushindana,
kama ungependa ili choose-- tena

919
00:39:30,100 --> 00:39:32,460
juu ya teams-- kujaribu
kutatua changamoto nyingi

920
00:39:32,460 --> 00:39:36,160
kama unaweza katika programu na
marafiki wa kwako dhidi ya wengine.

921
00:39:36,160 --> 00:39:38,850
>> Na upande wa mkia wa muhula
mapenzi sisi mkataba baadhi ya mabasi,

922
00:39:38,850 --> 00:39:40,850
kweli kutumia muda
katika Cambridge, kama wewe d

923
00:39:40,850 --> 00:39:43,460
kama kujiunga nasi, kwa
kinachojulikana CS50 hackathon.

924
00:39:43,460 --> 00:39:44,600
Saa 7 tutaweza kuanza.

925
00:39:44,600 --> 00:39:45,970
Karibu 9 PM, tutaweza kuwa pizza.

926
00:39:45,970 --> 00:39:47,650
Karibu 01:00, tutaweza kuwa burritos.

927
00:39:47,650 --> 00:39:50,550
Na mtu yeyote bado macho juu ya
bus ride nyumbani karibu 05:00,

928
00:39:50,550 --> 00:39:54,070
tutaweza kuacha mbali kwa ajili ya pancakes
katika IHOP njiani home--

929
00:39:54,070 --> 00:39:57,540
nafasi ya saa 12 ya kutumbukiza
mwenyewe na wanafunzi na wafanyakazi

930
00:39:57,540 --> 00:39:59,950
katika mradi kozi ya mwisho,
ambayo ni fursa

931
00:39:59,950 --> 00:40:01,870
kwenda zaidi
kozi ya seti tatizo

932
00:40:01,870 --> 00:40:05,950
na kubuni na kutekeleza zaidi
kitu chochote cha riba na wewe,

933
00:40:05,950 --> 00:40:09,170
ambayo hatimaye kuwa
The featured hapa katika huru.

934
00:40:09,170 --> 00:40:12,510
kwanza kabisa CS50 haki kwa mara ya mwisho
mwaka, maonyesho mwisho wa muhula

935
00:40:12,510 --> 00:40:15,460
au sherehe ya nini kila mtu
darasani alikuwa yametimia,

936
00:40:15,460 --> 00:40:19,810
hasa wale, tena, ambaye alikwenda kutoka
chochote kwa kitu, kutoka sifuri hadi 60,

937
00:40:19,810 --> 00:40:22,450
kutokuwa na background kabla
na kuonyesha, hatimaye,

938
00:40:22,450 --> 00:40:26,960
kitu kwa ajili ya chuo nzima na,
kama online, dunia ya kuona, kama vile.

939
00:40:26,960 --> 00:40:30,780
>> Sasa, hizi hapa ni chache tu ya
TAS na CAS kwamba inafanya CS50 iwezekanavyo.

940
00:40:30,780 --> 00:40:33,034
Naomba kukaribisha yoyote
ya wanachama hao wafanyakazi

941
00:40:33,034 --> 00:40:35,700
ambao ni hapa kuja juu ya hatua,
pamoja na wakuu kozi ya,

942
00:40:35,700 --> 00:40:38,785
kutoa baadhi ya maneno ya
msukumo, kama vile.

943
00:40:38,785 --> 00:41:03,138

944
00:41:03,138 --> 00:41:03,950
>> ANDI: Hi, guys.

945
00:41:03,950 --> 00:41:05,290
Je, unaweza guys kusikia mimi?

946
00:41:05,290 --> 00:41:10,260
Shukrani kwa ajili ya kujiunga na sisi juu ya hili
lovely, mvua Alhamisi mchana.

947
00:41:10,260 --> 00:41:11,010
Jina langu ni Andi.

948
00:41:11,010 --> 00:41:12,070
Mimi nina junior katika Berkeley.

949
00:41:12,070 --> 00:41:17,250
Na pamoja na Stelios na Majira,
tutakuwa na tatu kichwa yako kufundishia

950
00:41:17,250 --> 00:41:19,277
wasaidizi kwa mwaka huu ujao.

951
00:41:19,277 --> 00:41:21,110
Kwa hiyo, mimi nadhani, show ya
hands-- jinsi wengi wenu

952
00:41:21,110 --> 00:41:26,680
hawana nia ya kuwa CS
kuu wala kweli mbizi kwa undani

953
00:41:26,680 --> 00:41:29,930
katika sayansi ya kompyuta kama kuu hapa?

954
00:41:29,930 --> 00:41:30,520
Kutisha.

955
00:41:30,520 --> 00:41:32,730
Hiyo ni kipaji.

956
00:41:32,730 --> 00:41:35,850
>> Kwa hiyo mimi nina kweli masuala ya kimataifa
na utambuzi sayansi kubwa.

957
00:41:35,850 --> 00:41:37,780
I literally alikuja
Yale kwa nia

958
00:41:37,780 --> 00:41:42,199
ya kamwe kuwa na kuangalia
idadi milele tena katika maisha yangu.

959
00:41:42,199 --> 00:41:44,990
Nilipofika Yale, hii ilikuwa
kitu ambacho alikuwa kamwe katika rada yangu.

960
00:41:44,990 --> 00:41:46,460
Nilitaka kujifunza kuhusu mashairi.

961
00:41:46,460 --> 00:41:48,500
Nilitaka kujifunza kuhusu
masuala ya kimataifa.

962
00:41:48,500 --> 00:41:50,510
Nilitaka kujifunza kuhusu
watercolor michoro.

963
00:41:50,510 --> 00:41:53,360
Ndiyo, sisi kutoa darasa
juu ya michoro watercolor.

964
00:41:53,360 --> 00:41:57,340
>> Lakini mimi kamwe kweli alikuwa na nia
katika chochote STEM kuhusiana.

965
00:41:57,340 --> 00:41:59,620
Lakini basi wakubwa mimi
got, zaidi nikagundua

966
00:41:59,620 --> 00:42:03,340
kwamba kila uwanja kweli katika baadhi ya
maana ajira kwa sayansi ya kompyuta,

967
00:42:03,340 --> 00:42:05,700
au kama si sayansi ya kompyuta, hesabu.

968
00:42:05,700 --> 00:42:08,300
Kwa kweli, kwa kimataifa wangu
mambo jiwe kuu la msingi mradi,

969
00:42:08,300 --> 00:42:12,020
sisi ni kutumia data analytics
kuchambua mashambulizi ya kigaidi

970
00:42:12,020 --> 00:42:13,680
kwa Boko Haram nchini Nigeria.

971
00:42:13,680 --> 00:42:17,510
Na hivyo kama unaweza kuona, bila kujali
ya kile kuu kuishia kutafuta

972
00:42:17,510 --> 00:42:21,640
au nini maslahi yako hapa katika Yale
ni, programu na misingi

973
00:42:21,640 --> 00:42:24,130
ya chochote ujuzi ni super muhimu.

974
00:42:24,130 --> 00:42:29,840
Na CS50 kweli ni pamoja na vifaa ili
aina ya kukopesha pesa nyingi

975
00:42:29,840 --> 00:42:32,060
na wewe, bila kujali
jinsi starehe wewe ni

976
00:42:32,060 --> 00:42:34,590
au jinsi nia wewe ni
katika kutafuta darasani.

977
00:42:34,590 --> 00:42:37,290
>> Majira ya kwenda kuzungumza kidogo
kidogo kuhusu nini wewe guys ni

978
00:42:37,290 --> 00:42:39,635
kwenda kujifunza kuhusu mwaka huu.

979
00:42:39,635 --> 00:42:40,510
SUMMER: Hi, kila mtu.

980
00:42:40,510 --> 00:42:41,320
Mimi nina Majira Wu.

981
00:42:41,320 --> 00:42:43,090
Mimi nina junior katika Morse.

982
00:42:43,090 --> 00:42:48,100
Na mimi kwa kweli ilianza nje
kama CS50 mwanafunzi mwenyewe.

983
00:42:48,100 --> 00:42:51,460
Hivyo miaka mitatu iliyopita, nilikuwa kwenye mwaka pengo.

984
00:42:51,460 --> 00:42:53,940
Ningependa kamwe kuchukuliwa CS
darasa katika shule ya sekondari,

985
00:42:53,940 --> 00:42:57,800
lakini nilifikiri kwamba katika muda wangu bure,
ni d kuwa baridi na kujifunza jinsi ya kanuni.

986
00:42:57,800 --> 00:43:02,610
Hivyo sikuwa haraka Google search,
inaonekana kwa nini ilikuwa inapatikana online,

987
00:43:02,610 --> 00:43:06,990
akaona video huu kwa Muppets
na DJs na tovuti ya baridi.

988
00:43:06,990 --> 00:43:09,450
Mimi nilikuwa kama, nataka
kujifunza jinsi ya kufanya hivyo.

989
00:43:09,450 --> 00:43:14,690
>> Hivyo mimi alichukua kozi, na mimi
tu akaanguka katika upendo na hayo.

990
00:43:14,690 --> 00:43:20,410
Lakini Nakumbuka kuwa hivyo wivu wa
kids ambaye angeweza kuhudhuria hackathon,

991
00:43:20,410 --> 00:43:24,610
kuhudhuria Puzzle Day, kuhudhuria ofisi
masaa, kupata msaada kutoka kwa TAS katika mtu.

992
00:43:24,610 --> 00:43:27,410
Na hivyo mimi kamwe kufikiri
kwamba Ningependa kupata nafasi

993
00:43:27,410 --> 00:43:30,640
kuwa hapa kushiriki katika
Bila shaka kwamba kwanza got

994
00:43:30,640 --> 00:43:33,630
me nia ya kompyuta
sayansi na ni sababu

995
00:43:33,630 --> 00:43:35,690
Mimi nina sayansi ya kompyuta kuu leo.

996
00:43:35,690 --> 00:43:39,290
Hivyo mimi itabidi kuonya, darasa hili
ni kwenda kunyoosha wewe.

997
00:43:39,290 --> 00:43:41,120
Ni kwenda changamoto.

998
00:43:41,120 --> 00:43:43,910
Lakini pia kwenda
kufundisha jinsi ya kufanya mambo

999
00:43:43,910 --> 00:43:45,506
kuwa wewe kamwe kufikiri unaweza.

1000
00:43:45,506 --> 00:43:49,330

1001
00:43:49,330 --> 00:43:52,160
>> Stelios: Hi, kila mtu.

1002
00:43:52,160 --> 00:43:53,510
Jina langu ni Stelios.

1003
00:43:53,510 --> 00:43:58,240
I am junior katika Branford
College na kubwa CS.

1004
00:43:58,240 --> 00:44:01,640
Mimi pia kutoka Athens, Ugiriki.

1005
00:44:01,640 --> 00:44:03,830
Mimi nina kweli kuangalia mbele
kwa mkutano nyote,

1006
00:44:03,830 --> 00:44:09,010
kuzungumza na wewe katika sehemu, katika
masaa ya ofisi, katika Ijumaa chakula cha mchana.

1007
00:44:09,010 --> 00:44:11,250
Mimi nina kweli msisimko kwa sababu
tumekuwa kuweka juhudi sana

1008
00:44:11,250 --> 00:44:14,650
katika kujenga msaada wa kipekee
muundo kwa ajili yenu nyote

1009
00:44:14,650 --> 00:44:19,170
kufanya uzoefu wako na
Bila shaka bora iwezekanavyo.

1010
00:44:19,170 --> 00:44:22,640
Na natumaini kwamba ingawa wengi wa
wewe kuwa pengine si kuchukuliwa CS

1011
00:44:22,640 --> 00:44:27,310
Bila shaka kabla, natumaini hiyo ni CS50
kwa ajili yenu ni nini cheche maslahi

1012
00:44:27,310 --> 00:44:30,260
kujiingiza zaidi ya kompyuta
sayansi katika siku zijazo,

1013
00:44:30,260 --> 00:44:33,270
kama amefanya kwa hivyo
watu wengi katika siku za nyuma.

1014
00:44:33,270 --> 00:44:36,740
Hivyo kuwashukuru kwa kuwa
hapa, msisimko kuona wewe.

1015
00:44:36,740 --> 00:44:38,487
Jason Hirschhorn.

1016
00:44:38,487 --> 00:44:39,820
JASON HIRSCHHORN: Hi, kila mtu.

1017
00:44:39,820 --> 00:44:41,700
Jina langu ni Jason Hirschhorn.

1018
00:44:41,700 --> 00:44:43,050
Mimi kuishi katika Silliman.

1019
00:44:43,050 --> 00:44:46,910
Na nilikwenda Harvard kama undergrad
na majored katika masomo ya kijamii

1020
00:44:46,910 --> 00:44:48,870
na minored katika sayansi ya kompyuta.

1021
00:44:48,870 --> 00:44:53,100
Na moja ya majukumu yangu kuu hapa
ni kwa msaada wa wafanyakazi hii ya ajabu

1022
00:44:53,100 --> 00:44:54,630
kama wao kusaidia wewe wote.

1023
00:44:54,630 --> 00:44:56,410
Kwa kweli, hii si wote.

1024
00:44:56,410 --> 00:45:01,230
Kuna 55 wa vyuo vikuu na
wahitimu hapa kwa msaada wewe wote.

1025
00:45:01,230 --> 00:45:04,420
Na mimi daresay moja ya bora
sehemu bila shaka kwa ajili yenu

1026
00:45:04,420 --> 00:45:08,080
zote ni kupata kufanya kazi na
yao, kupata kujua yao,

1027
00:45:08,080 --> 00:45:12,389
kupata kuwaona, katika CS50
na nje ya CS50 muhula huu

1028
00:45:12,389 --> 00:45:13,680
na kwa semesters mingi ijayo.

1029
00:45:13,680 --> 00:45:16,770
Hivyo hopefully utasikia kuchukua
Bila shaka kwa sababu hopefully wewe

1030
00:45:16,770 --> 00:45:21,060
kupata na kuingiliana na
wafanyakazi wa ajabu tuna juu ya hatua.

1031
00:45:21,060 --> 00:45:24,977
>> SPIKA: Naam, napenda kumaliza
kwa kusema itakuwa furaha.

1032
00:45:24,977 --> 00:45:26,810
DAVID Malan: Sawa,
shukrani kwa timu yetu nzima.

1033
00:45:26,810 --> 00:45:29,610
Naomba dim taa na
kuruhusu baadhi zaidi ya timu yetu,

1034
00:45:29,610 --> 00:45:32,890
wote kutoka Cambridge na New Haven,
kusema hello kama haya guys faili off.

1035
00:45:32,890 --> 00:45:36,130
Na baada ya kuwa itakuwa sisi mpito kwa
kwanza ya programu ushirikiano wetu

1036
00:45:36,130 --> 00:45:37,584
na lugha hii inaitwa Scratch.

1037
00:45:37,584 --> 00:45:38,500
Hivyo shukrani kwa timu.

1038
00:45:38,500 --> 00:45:40,770
Hebu dim taa na
kusikia kutoka kwa watu wengine wachache.

1039
00:45:40,770 --> 00:45:44,207
>> [Makofi]

1040
00:45:44,207 --> 00:45:45,680

1041
00:45:45,680 --> 00:45:48,140
>> [VIDEO avspelning]

1042
00:45:48,140 --> 00:45:53,210
>> -The Ujumbe wa CS50 ni kufanya wewe
vizuri zaidi kwa njia mpya kabisa

1043
00:45:53,210 --> 00:45:54,947
ya kufikiri, hii mawazo computational.

1044
00:45:54,947 --> 00:45:56,780
-Ni Alifanya sayansi ya kompyuta
kuvutia, ambayo

1045
00:45:56,780 --> 00:46:00,241
ni kitu kweli sikuwa kutambua
iliwezekana mpaka mimi alichukua darasani.

1046
00:46:00,241 --> 00:46:00,990
-I Alikuwa kama, Ho.

1047
00:46:00,990 --> 00:46:04,120
Mimi nina kweli kutafsiri mawazo yangu
katika kompyuta hivi sasa.

1048
00:46:04,120 --> 00:46:07,970
>> -hata Kama huna background yoyote
katika sayansi ya kompyuta au uzoefu wowote,

1049
00:46:07,970 --> 00:46:10,140
hii ni kweli darasani kwa ajili yenu.

1050
00:46:10,140 --> 00:46:12,250
>> -Basi Mimi dhahiri wanataka
wanafunzi wangu tu

1051
00:46:12,250 --> 00:46:14,350
kupata msisimko juu ya sayansi ya kompyuta.

1052
00:46:14,350 --> 00:46:17,187
Si tu programu, lakini
kufikiri kama mwanasayansi kompyuta

1053
00:46:17,187 --> 00:46:19,270
ni kweli nini nataka
kujaribu kufundisha freshman yangu.

1054
00:46:19,270 --> 00:46:21,560
>> -CS50 Ni ngumu na zawadi.

1055
00:46:21,560 --> 00:46:22,592
>> -An Uzoefu.

1056
00:46:22,592 --> 00:46:23,456
>> -Extravaganza.

1057
00:46:23,456 --> 00:46:26,350
>> -Ni Ni kuleta kwetu kwa kiwango ijayo.

1058
00:46:26,350 --> 00:46:28,850
>> [Music kucheza]

1059
00:46:28,850 --> 00:46:32,167
>> -The TFS ni, nadhani,
lifeblood ya shaka.

1060
00:46:32,167 --> 00:46:34,560
>> -I'm Msisimko kuwa na
wanafunzi wangu mimi nina kusaidia

1061
00:46:34,560 --> 00:46:38,027
na kwamba wakati aha kutambua
nini re kweli kujaribu

1062
00:46:38,027 --> 00:46:39,610
kufanya, kufikiri jinsi ya kufanya pset.

1063
00:46:39,610 --> 00:46:41,438
>> -CS50 Dhahiri shaka ngumu.

1064
00:46:41,438 --> 00:46:43,960
Lakini tofauti na nyingine yoyote
Bila shaka kweli katika Yale,

1065
00:46:43,960 --> 00:46:45,759
ina kubwa vile,
kuunga mkono jamii.

1066
00:46:45,759 --> 00:46:47,550
-Unaweza Kabisa hawana
haja ya kujua chochote

1067
00:46:47,550 --> 00:46:49,341
kuhusu coding kuwa na uwezo
kuchukua kozi.

1068
00:46:49,341 --> 00:46:52,270
-Ni Ajabu kwa kuangalia jinsi mbali
watu kuja katika muhula mmoja.

1069
00:46:52,270 --> 00:46:55,610
>> -Unaweza Walikuwa si peke yake wamekaa katika
chumba yako kujifunza na kanuni,

1070
00:46:55,610 --> 00:46:57,170
lakini ilikuwa zaidi kuliko tu darasani.

1071
00:46:57,170 --> 00:46:58,044
Ilikuwa ni uzoefu.

1072
00:46:58,044 --> 00:47:02,500
njia -The bora ya kujifunza dhana na
kwa mchakato wao ni kwa kufundisha wengine.

1073
00:47:02,500 --> 00:47:04,033
>> -Nini Ni namba ya mgawanyiko?

1074
00:47:04,033 --> 00:47:06,934
>> [Music kucheza]

1075
00:47:06,934 --> 00:47:08,080
>> -Na Hii ni CS50.

1076
00:47:08,080 --> 00:47:10,810
>> [Music kucheza]

1077
00:47:10,810 --> 00:47:11,720

1078
00:47:11,720 --> 00:47:12,380
>> -Hii Ni CS50.

1079
00:47:12,380 --> 00:47:13,446
>> -Got Tatizo?

1080
00:47:13,446 --> 00:47:14,852
Machozi katika nusu.

1081
00:47:14,852 --> 00:47:15,804
>> [Music kucheza]

1082
00:47:15,804 --> 00:47:18,184
>> Kutupa mbali.

1083
00:47:18,184 --> 00:47:19,520
>> DAVID Malan: zote haki.

1084
00:47:19,520 --> 00:47:23,190
Basi hebu tackle-- katika kidogo
bit, kwa bahati, ni

1085
00:47:23,190 --> 00:47:25,270
wamekuwa mila hii kwa
baadhi ya sababu kwa miaka 10

1086
00:47:25,270 --> 00:47:27,260
kutumikia keki katika
kuanza na mwisho wa CS50.

1087
00:47:27,260 --> 00:47:30,800
Hivyo wanasubiri wewe katika mwisho wa
leo, kwa kuongeza mitaala,

1088
00:47:30,800 --> 00:47:34,270
itakuwa baadhi keki pamoja, na
wafanyakazi kozi ya kusema hello.

1089
00:47:34,270 --> 00:47:37,110
Lakini sasa, hebu mpito kwa
kwanza ya lugha yetu, ambapo

1090
00:47:37,110 --> 00:47:40,970
tutaweza kutumia kweli tu wiki na moja
tatizo kuweka kwenye uwanja huu, Scratch.

1091
00:47:40,970 --> 00:47:43,160
Na utapata kama wameweza
iliyowekwa mbele, wengi

1092
00:47:43,160 --> 00:47:46,280
wa mawazo na
Uwezekano ni ukoo na wewe.

1093
00:47:46,280 --> 00:47:48,160
Lakini utapata kwamba
ni furaha njiani

1094
00:47:48,160 --> 00:47:51,201
kufikiri hasa jinsi ya kutafsiri
baadhi ya mawazo tayari kujua

1095
00:47:51,201 --> 00:47:53,852
kwa mazingira fulani
kwa kweli kumvutia familia yako

1096
00:47:53,852 --> 00:47:57,060
na marafiki na kazi yako, ambayo inaweza
kwenda online, kama wewe ili kuchagua, lakini baadaye.

1097
00:47:57,060 --> 00:47:58,851
>> Na kama wewe huna
uzoefu kabla na ni

1098
00:47:58,851 --> 00:48:01,540
miongoni mwa wengi wa
wanafunzi chini ya starehe,

1099
00:48:01,540 --> 00:48:05,320
kutambua kwamba wengi wa mawazo sisi
tu kutalii na mambo reality--

1100
00:48:05,320 --> 00:48:07,970
kama vitabu simu na mahudhurio
na hivyo sana aliye mzaa kutafsiri

1101
00:48:07,970 --> 00:48:12,280
haki nicely kwa kompyuta,
lakini si kama wewe kutumia,

1102
00:48:12,280 --> 00:48:13,710
awali, lugha kama hii.

1103
00:48:13,710 --> 00:48:16,290
Hivyo hii ni mpango imeandikwa
katika lugha inayoitwa C.

1104
00:48:16,290 --> 00:48:18,590
Na tutaweza kutumia kidogo kabisa
cha muda katika C, hatimaye.

1105
00:48:18,590 --> 00:48:22,560
Lakini ni tabia mbaya, hii kuangalia kidogo
cryptic kwa wewe katika mtazamo wa kwanza.

1106
00:48:22,560 --> 00:48:25,760
Kwa kweli, kuna mengi ya weird
syntax, mabano, angle mabano,

1107
00:48:25,760 --> 00:48:27,422
curly braces, quotes, na semicolons.

1108
00:48:27,422 --> 00:48:29,880
Na hakika, kama wewe kupiga mbizi katika
Programu kwa mara ya kwanza

1109
00:48:29,880 --> 00:48:33,420
kuangalia na kujaribu kujenga stuff
kama hii, kwa uaminifu, wewe kupata hivyo mired

1110
00:48:33,420 --> 00:48:36,500
hivyo mara nyingi katika kijinga tu
minutia kwamba ana kitu

1111
00:48:36,500 --> 00:48:38,240
kielimu ya kuvutia kuhusu hilo.

1112
00:48:38,240 --> 00:48:40,980
>> Lakini kufikiria kama unaweza kujenga
program-- hiyo ambayo,

1113
00:48:40,980 --> 00:48:46,200
kama unaweza aina ya infer, pengine
prints "Hello, ulimwengu" kwa namna fulani au nyingine.

1114
00:48:46,200 --> 00:48:49,850
Tunaweza distill kwamba wazo moja katika
vipande viwili tu puzzle, kama wewe.

1115
00:48:49,850 --> 00:48:52,850
Hakika, Scratch ni ya kuvutia
kwa sababu ni lugha huu graphical.

1116
00:48:52,850 --> 00:48:56,110
Unaweza Drag na kuacha haya
vipande puzzle kwamba tu interlock

1117
00:48:56,110 --> 00:48:57,940
kama inafanya hisia mantiki ya kufanya hivyo.

1118
00:48:57,940 --> 00:48:59,830
Na hivyo katika Scratch,
tutaweza hivi karibuni kuona, hii ni

1119
00:48:59,830 --> 00:49:03,460
jinsi gani kutekeleza hiyo
mpango, na vipande viwili tu puzzle

1120
00:49:03,460 --> 00:49:05,420
kwamba pretty much kufanya nini wanasema.

1121
00:49:05,420 --> 00:49:08,870
>> Lakini tutaona katika muda tu kwamba baadhi ya
ya jengo vitalu kwamba sisi alidokeza

1122
00:49:08,870 --> 00:49:12,140
kwa mapema na wachache zaidi ni kwamba wote
hatimaye ni kwenda kuanzisha

1123
00:49:12,140 --> 00:49:13,460
baadhi ya mipango yetu ya kwanza.

1124
00:49:13,460 --> 00:49:15,460
Tunakwenda kuwa na mambo
kama functions-- tu

1125
00:49:15,460 --> 00:49:18,034
hatua ambazo kufanya kitu,
kama kusema hello, dunia.

1126
00:49:18,034 --> 00:49:20,200
Tunakwenda kuwa na tanzi,
mambo ambayo kushawishi mizunguko

1127
00:49:20,200 --> 00:49:23,210
tena na tena, tu kama sisi
wakati iliyopita na kutafuta

1128
00:49:23,210 --> 00:49:24,110
kwa Mike Smith.

1129
00:49:24,110 --> 00:49:27,190
Vigezo, kama katika algebra, kama wewe
na x au y, kwamba wanaweza kuhifadhi idadi.

1130
00:49:27,190 --> 00:49:29,940
Naam, katika mpango, unaweza kweli
kuhifadhi zaidi ya idadi tu.

1131
00:49:29,940 --> 00:49:34,290
Unaweza kuhifadhi maneno na sentensi
na graphics na mambo mengine bado.

1132
00:49:34,290 --> 00:49:37,530
Maneno Boolean, tu
questions-- ndiyo au hapana, kweli au uongo.

1133
00:49:37,530 --> 00:49:40,680
Masharti, maamuzi maamuzi
msingi ndiyo wale / hakuna majibu.

1134
00:49:40,680 --> 00:49:43,890
>> Na mambo kisha fancier kama
safu na nyuzi na matukio

1135
00:49:43,890 --> 00:49:46,100
na idadi yoyote ya wengine
makala, lakini yote ambayo

1136
00:49:46,100 --> 00:49:48,670
map nicely sana sana
vitalu kirafiki kama hii.

1137
00:49:48,670 --> 00:49:52,736
Hii ni kwenda kuwa kazi, a
zambarau puzzle kipande kwamba anasema tu

1138
00:49:52,736 --> 00:49:54,717
nini jina lake is-- katika kesi hii, wanasema.

1139
00:49:54,717 --> 00:49:56,550
Na kisha mara nyingi, kuna
sanduku nyeupe kwamba

1140
00:49:56,550 --> 00:49:58,550
Unaweza aina katika au buruta baadhi ya thamani katika.

1141
00:49:58,550 --> 00:50:01,370
Na kwamba ni nini kwa ujumla
aitwaye hoja au parameter.

1142
00:50:01,370 --> 00:50:04,110
Ni njia ya kubadilisha
default tabia ya puzzle

1143
00:50:04,110 --> 00:50:07,530
kipande au kazi hivyo kwamba hana
kitu desturi kwa wewe kama akisema,

1144
00:50:07,530 --> 00:50:12,570
hello, dunia au hello, Andy au hello,
Jason au baadhi ya hukumu nyingine badala yake.

1145
00:50:12,570 --> 00:50:15,830
>> Kama unataka kusema kwamba a
lot-- literally forever--

1146
00:50:15,830 --> 00:50:18,142
unaweza kuchukua mwingine
puzzle kipande inayoitwa milele

1147
00:50:18,142 --> 00:50:20,100
na tu ipo
mbili pamoja kama hii.

1148
00:50:20,100 --> 00:50:24,090
Na kwamba kitanzi, kama picha unaonyesha,
ina maana tu kusema hello, dunia milele,

1149
00:50:24,090 --> 00:50:25,810
tena na tena na tena.

1150
00:50:25,810 --> 00:50:28,840
Au, kama wewe tu unataka kufanya hivyo
finite idadi ya nyakati, kama mara 50,

1151
00:50:28,840 --> 00:50:32,050
kuna kwenda kuwa mwingine puzzle
kipande kwa that-- kurudia mara 50.

1152
00:50:32,050 --> 00:50:34,190
>> Wakati huo huo, kama unataka
kuwa na kutofautiana

1153
00:50:34,190 --> 00:50:36,090
katika lugha hii tuko
kuhusu kwa kucheza na,

1154
00:50:36,090 --> 00:50:37,880
unaweza kutumia rangi ya machungwa block kama hii.

1155
00:50:37,880 --> 00:50:40,750
Na kutofautiana hii mimi kiholela
kuitwa i kwa integer.

1156
00:50:40,750 --> 00:50:42,290
Na mimi tu kuweka sawa na 0.

1157
00:50:42,290 --> 00:50:44,780
Na hivyo labda i, katika hii
kesi hii kutofautiana

1158
00:50:44,780 --> 00:50:46,630
inawakilisha alama ya mtu katika mchezo.

1159
00:50:46,630 --> 00:50:49,680
Unaweza kuanza saa sifuri, na kila wakati
kufanya lengo au kitu kama hicho,

1160
00:50:49,680 --> 00:50:51,270
kupata moja ya hatua za ziada.

1161
00:50:51,270 --> 00:50:52,830
>> Unaweza kuuliza maswali katika Scratch.

1162
00:50:52,830 --> 00:50:55,390
Kama sisi Drag na kuacha puzzle
vipande katika wakati kama huu,

1163
00:50:55,390 --> 00:50:58,470
unaweza kuuliza maswali kama,
vizuri, ni i chini ya 50?

1164
00:50:58,470 --> 00:51:00,060
Labda unahitaji pointi 50 kwa kushinda.

1165
00:51:00,060 --> 00:51:01,893
Na hivyo hii itakuwa ni
swali wewe d kuuliza.

1166
00:51:01,893 --> 00:51:04,030
Au, kwa ujumla zaidi, wewe
naweza kusema ni x chini ya y,

1167
00:51:04,030 --> 00:51:05,780
ambapo kuna vigezo mbili ulihusisha?

1168
00:51:05,780 --> 00:51:08,320
Sasa, hii ni moja ya mengi
kubwa katika mtazamo wa kwanza,

1169
00:51:08,320 --> 00:51:11,470
lakini kwa kweli si wote kwamba ngumu zaidi.

1170
00:51:11,470 --> 00:51:15,390
>> Hii ni mchanganyiko
ya hali na vigezo

1171
00:51:15,390 --> 00:51:19,370
na maneno Boolean kuuliza
tatu questions-- ni x chini ya y?

1172
00:51:19,370 --> 00:51:20,660
Kama ni hivyo, kusema hivyo.

1173
00:51:20,660 --> 00:51:22,170
Sema, x ni chini ya y.

1174
00:51:22,170 --> 00:51:26,571
Mwingine, kama x ni mkubwa kuliko
y, kingine x lazima kuwa sawa na y.

1175
00:51:26,571 --> 00:51:29,070
Na ambapo pamoja na Mike Smith,
kulikuwa na matukio manne, hapa

1176
00:51:29,070 --> 00:51:32,270
katika dunia ya idadi, x ni ama
chini ya mkuu zaidi kuliko, au sawa na.

1177
00:51:32,270 --> 00:51:34,531
Wote sisi ni forks tatu katika barabara.

1178
00:51:34,531 --> 00:51:36,530
Na kisha kuna fancier
vipande puzzle kama hii

1179
00:51:36,530 --> 00:51:39,613
ajili ya mambo kama arrays, ambapo tuko
kwenda kuwa na uwezo wa kuhifadhi habari.

1180
00:51:39,613 --> 00:51:43,590
Tunakwenda kuona vitalu kwamba kuruhusu
sisi kutekeleza nyuzi nyingi,

1181
00:51:43,590 --> 00:51:46,620
kipengele mwingine tutaweza kutumia, na
basi pia kitu kinachoitwa matukio.

1182
00:51:46,620 --> 00:51:49,390
Lakini kabla ya sisi kupata kwamba
uhakika na kujenga hata,

1183
00:51:49,390 --> 00:51:52,000
hatimaye, desturi yetu wenyewe
vipande puzzle, hebu

1184
00:51:52,000 --> 00:51:53,950
kweli kufungua programu yenyewe.

1185
00:51:53,950 --> 00:51:54,860
>> Hivyo hii ni Scratch.

1186
00:51:54,860 --> 00:51:57,490
Ni inapatikana katika scratch.mit.edu.

1187
00:51:57,490 --> 00:51:59,650
Na wewe ni kuwakaribisha kwa kucheza
sasa au baadaye, kama vile.

1188
00:51:59,650 --> 00:52:01,330
Hii hutokea kwa kuwa toleo offline.

1189
00:52:01,330 --> 00:52:03,129
Kwa watu ambao hawana
inge biashara kubwa,

1190
00:52:03,129 --> 00:52:04,962
unaweza kushusha
programu hiyo, kama vile.

1191
00:52:04,962 --> 00:52:07,460
Na kuna kweli tatu tu
vipengele kwa programu hii.

1192
00:52:07,460 --> 00:52:10,860
On kona ya juu upande wa kushoto wa
screen ni aina ya hatua

1193
00:52:10,860 --> 00:52:13,800
kwamba Scratch, ambaye by default
Inaonekana kama paka, anaishi ndani.

1194
00:52:13,800 --> 00:52:16,799
Anaweza hoja juu, chini, kushoto, na kulia
na kufanya idadi yoyote ya mambo mengine,

1195
00:52:16,799 --> 00:52:20,520
na wanaweza kuangalia idadi yoyote ya njia makao
juu ya mavazi kwamba hawawajui kwake.

1196
00:52:20,520 --> 00:52:22,980
Lakini hii ni nini tutaweza wito
sprite, aina ya tabia.

1197
00:52:22,980 --> 00:52:25,429
Na unaweza kuwa na nyingi
wahusika, kama tutaweza hivi karibuni kuona.

1198
00:52:25,429 --> 00:52:30,060
>> Katikati sasa wote ni hizi puzzle
vipande na makundi hayo au pallets

1199
00:52:30,060 --> 00:52:30,900
yake.

1200
00:52:30,900 --> 00:52:32,429
Hivyo sasa hivi, mimi clicked juu Motion.

1201
00:52:32,429 --> 00:52:35,900
Na hivyo mimi nina kuona yote ya
mwendo yanayohusiana na vipande puzzle au vitalu,

1202
00:52:35,900 --> 00:52:37,950
hivyo kazi ambayo na
cha kufanya na kwenda juu,

1203
00:52:37,950 --> 00:52:39,950
chini, kushoto, au kulia au
baadhi operesheni mengine.

1204
00:52:39,950 --> 00:52:43,790
Lakini kama mimi clicked juu Looks, wewe
naweza kuona mambo kama kuzuia kusema

1205
00:52:43,790 --> 00:52:45,084
kuwa tuliona muda tu iliyopita.

1206
00:52:45,084 --> 00:52:48,250
Na kama mimi bonyeza Control, utaona
mambo kama kurudia na hata milele

1207
00:52:48,250 --> 00:52:50,410
na kama kuzuia kwamba
tuliona wakati iliyopita.

1208
00:52:50,410 --> 00:52:51,670
>> Na hivyo utapata
kwamba tutaweza tu scratch

1209
00:52:51,670 --> 00:52:53,750
uso wa baadhi ya
puzzle vipande pamoja,

1210
00:52:53,750 --> 00:52:55,833
lakini ni wote haki angavu
na uhakika na click.

1211
00:52:55,833 --> 00:52:58,219
Hakika, Scratch ilitengenezwa
kwa wanafunzi wadogo

1212
00:52:58,219 --> 00:53:00,730
kusaidia kuwapa outlet
kwa kufikiri ubunifu.

1213
00:53:00,730 --> 00:53:03,040
Na bado ajabu, ni
ajabu wanazidi jiwe

1214
00:53:03,040 --> 00:53:07,020
na hasa mawazo tunakwenda
kuchunguza katika C na Python na JavaScript,

1215
00:53:07,020 --> 00:53:07,719
vilevile.

1216
00:53:07,719 --> 00:53:11,960
>> Upande wa kulia, hatimaye, hapa
ni hii, kinachojulikana scripts eneo hilo.

1217
00:53:11,960 --> 00:53:15,750
Na hii ni slate tupu na
ambayo wewe kuanza kuandika mpango.

1218
00:53:15,750 --> 00:53:16,897
Na mimi itabidi hasa kwamba.

1219
00:53:16,897 --> 00:53:19,980
Sasa, mimi kutokea kwa kujua ambapo mambo ni
kwa sababu mimi tumefanya hii mara chache.

1220
00:53:19,980 --> 00:53:22,710
Lakini najua kwamba chini ya
Matukio jamii,

1221
00:53:22,710 --> 00:53:25,520
kuna hii ya kuzuia here--
wakati kijani bendera clicked.

1222
00:53:25,520 --> 00:53:28,790
Na taarifa kama mimi zoom nje na
nyuma katika juu hapa juu ya hatua,

1223
00:53:28,790 --> 00:53:31,190
maisha Scratch ndani ya hii
kidogo rectangular dunia,

1224
00:53:31,190 --> 00:53:33,920
atop ambayo ni ya kijani
bendera na nyekundu kuacha ishara.

1225
00:53:33,920 --> 00:53:36,180
Hivyo kwenda na kuacha, kwa mtiririko huo.

1226
00:53:36,180 --> 00:53:38,710
>> Na hivyo kile kufanya Nataka kufanya
wakati kwamba bendera ya kijani ni clicked?

1227
00:53:38,710 --> 00:53:40,900
Naam, napenda kwenda kwa kuwa Inaonekana jamii.

1228
00:53:40,900 --> 00:53:43,357
Na napenda kwenda mbele
na Drag na kuacha hii.

1229
00:53:43,357 --> 00:53:45,940
Na taarifa kwa haraka kama anapata
karibu, wao ni aina ya sumaku.

1230
00:53:45,940 --> 00:53:48,489
Hivyo kama mimi sasa basi kwenda, ni snaps
pamoja nzuri na cleanly.

1231
00:53:48,489 --> 00:53:51,030
Na mimi nina kwenda mbele na
kusema kitu kama hello, dunia

1232
00:53:51,030 --> 00:53:52,190
kwa sekunde mbili.

1233
00:53:52,190 --> 00:53:56,730
Hebu zoom nje na click sasa
kijani bendera, na kusema, hello, dunia.

1234
00:53:56,730 --> 00:53:57,230
Sawa.

1235
00:53:57,230 --> 00:53:58,460
Basi hiyo ni yote faini na nzuri.

1236
00:53:58,460 --> 00:53:59,900
Si wote kwamba kusisimua.

1237
00:53:59,900 --> 00:54:01,340
Hebu kufanya hivyo cuter kidogo.

1238
00:54:01,340 --> 00:54:03,494
Nami najua kuwa katika
mapema, Scratch hutokea

1239
00:54:03,494 --> 00:54:05,160
kuja na baadhi ya mambo cute kama hii.

1240
00:54:05,160 --> 00:54:07,720
Hivyo kucheza meow sauti hadi kufanyika.

1241
00:54:07,720 --> 00:54:09,531
Basi hebu kufanya hili.

1242
00:54:09,531 --> 00:54:10,380
>> [Meow]

1243
00:54:10,380 --> 00:54:11,819
>> Aw, hiyo ni adorable.

1244
00:54:11,819 --> 00:54:12,860
Na kama mimi click yake again--

1245
00:54:12,860 --> 00:54:14,920
>> [Meow]

1246
00:54:14,920 --> 00:54:15,460
>> Na tena.

1247
00:54:15,460 --> 00:54:16,740
>> [Meow]

1248
00:54:16,740 --> 00:54:18,760
>> Lakini mimi kuendelea kuwa na reanimate Scratch.

1249
00:54:18,760 --> 00:54:20,010
Lakini siwezi kufanya vizuri zaidi kuliko huu.

1250
00:54:20,010 --> 00:54:23,060
Kwa nini si mimi tu Drag tatu wa haya.

1251
00:54:23,060 --> 00:54:24,821
Na sasa ni mara tatu kama adorable.

1252
00:54:24,821 --> 00:54:26,264
>> [Meowing]

1253
00:54:26,264 --> 00:54:28,190
>> OK, kwa kweli, ni kidogo creepy.

1254
00:54:28,190 --> 00:54:31,020
Kwa hiyo, tunahitaji kitu katika kati huko.

1255
00:54:31,020 --> 00:54:33,870
Kama mimi kwenda Udhibiti, inaonekana kama
kuna kweli kuzuia kusubiri.

1256
00:54:33,870 --> 00:54:36,994
Na hivyo taarifa kama mimi hover zaidi ya hapo
na napenda kufanya hili kidogo kubwa.

1257
00:54:36,994 --> 00:54:38,780
Kama mimi hover, ni kwenda
snap katika nafasi.

1258
00:54:38,780 --> 00:54:41,660
Hivyo kusubiri moja ya pili, kusubiri moja ya pili.

1259
00:54:41,660 --> 00:54:43,170
Hebu kugonga bendera ya kijani tena.

1260
00:54:43,170 --> 00:54:46,330
>> [Meowing]

1261
00:54:46,330 --> 00:54:47,695

1262
00:54:47,695 --> 00:54:50,660
>> OK, kidogo zaidi ya asili,
lakini si ufanisi sana.

1263
00:54:50,660 --> 00:54:54,300
Hivyo hii ni sahihi kama mpango wangu
lengo ilikuwa meow mara tatu.

1264
00:54:54,300 --> 00:54:56,410
Lakini si sana vizuri iliyoundwa.

1265
00:54:56,410 --> 00:54:57,740
Mimi aina ya kukata pembe baadhi.

1266
00:54:57,740 --> 00:54:58,730
I got kidogo wavivu.

1267
00:54:58,730 --> 00:55:05,620
Kile anahisi like-- je, mimi kuonekana
wamefanya vibaya, unaweza kusema?

1268
00:55:05,620 --> 00:55:07,197
Yeah?

1269
00:55:07,197 --> 00:55:08,030
Yeah, katikati.

1270
00:55:08,030 --> 00:55:11,208

1271
00:55:11,208 --> 00:55:13,083
Watazamaji: Kutumika zaidi
kumbukumbu kuliko wewe zinahitajika ili

1272
00:55:13,083 --> 00:55:15,005
kwa sababu unatumia
hivyo wengi line tofauti.

1273
00:55:15,005 --> 00:55:16,380
DAVID Malan: Yeah, hivyo mistari zaidi.

1274
00:55:16,380 --> 00:55:19,190
Na ingekuwa si lazima kuwa kumbukumbu,
ingawa inaweza kuonekana kama njia hiyo.

1275
00:55:19,190 --> 00:55:20,898
Lakini ni definitely--
kuna redundancy.

1276
00:55:20,898 --> 00:55:23,440
Na mimi literally aina ya kuburuzwa
na imeshuka mambo sawa.

1277
00:55:23,440 --> 00:55:26,564
Na kama wewe aina ya extrapolate-- kama
siyo dhahiri here-- vizuri, jinsi gani

1278
00:55:26,564 --> 00:55:27,910
Mimi meow mara 30?

1279
00:55:27,910 --> 00:55:31,450
Napenda Drag na kuacha, kama,
30 zaidi ya jozi ya vipande puzzle.

1280
00:55:31,450 --> 00:55:32,890
Na hakika, kuna njia bora.

1281
00:55:32,890 --> 00:55:34,056
Na tumeona njia bora zaidi.

1282
00:55:34,056 --> 00:55:36,870
Nini intuitively ingekuwa
kuwa njia bora?

1283
00:55:36,870 --> 00:55:37,890
Yeah, tu kutumia kitanzi.

1284
00:55:37,890 --> 00:55:38,810
Hakuna nakala na kuweka.

1285
00:55:38,810 --> 00:55:40,790
Na hakika, wakati wowote hii
muhula kama wewe kuanza

1286
00:55:40,790 --> 00:55:43,890
kutafuta mwenyewe akawatoa na kuacha,
au kweli kuiga na pasting,

1287
00:55:43,890 --> 00:55:47,050
hatari tabia ya kupata ndani kwa sababu
hii ni si maintainable sana.

1288
00:55:47,050 --> 00:55:49,740
Kwa mfano, kama nataka kubadili
sauti ya kitu kingine,

1289
00:55:49,740 --> 00:55:52,826
Nina mabadiliko hayo sasa katika tatu
maeneo badala ya moja tu.

1290
00:55:52,826 --> 00:55:54,575
Kwa sababu kwa kweli, kama mimi
kuvunja away-- hii mimi nina

1291
00:55:54,575 --> 00:55:56,170
tu kwenda decouple ni kama hiyo.

1292
00:55:56,170 --> 00:56:01,900
Hebu kunyakua kuzuia kurudia, na
kisha click tatu, aina tatu,

1293
00:56:01,900 --> 00:56:04,015
kutupa baadhi ya haya
mbali na tu kuruhusu kwenda.

1294
00:56:04,015 --> 00:56:05,890
Na kisha taarifa hiyo
haina kuangalia kama inafaa,

1295
00:56:05,890 --> 00:56:08,139
lakini sumaku, ni kwenda
na si tu snap katika nafasi

1296
00:56:08,139 --> 00:56:09,510
lakini kukua na kifafa sura.

1297
00:56:09,510 --> 00:56:10,310
Hivyo hiyo ni nzuri.

1298
00:56:10,310 --> 00:56:11,530
Na sasa kama mimi bonyeza kucheza.

1299
00:56:11,530 --> 00:56:13,870
>> [Meowing]

1300
00:56:13,870 --> 00:56:14,370

1301
00:56:14,370 --> 00:56:15,620
Nzuri sana.

1302
00:56:15,620 --> 00:56:16,126
Sawa.

1303
00:56:16,126 --> 00:56:18,500
Na sasa ni rahisi sana
mabadiliko, pia, kwa sababu naweza tu

1304
00:56:18,500 --> 00:56:20,670
mabadiliko namba moja katika sehemu moja.

1305
00:56:20,670 --> 00:56:22,500
Lakini hii, pia, si
kwamba kuvutia wote.

1306
00:56:22,500 --> 00:56:25,350
Hebu kweli kuwa
Scratch si meow, lakini hoja.

1307
00:56:25,350 --> 00:56:32,680
Hebu kwenda Motion na hoja hatua 10
ndani ya whoops of--, napenda kurekebisha hii.

1308
00:56:32,680 --> 00:56:37,460
Basi mimi kuwa ni hoja ya 10 steps--
kwa kweli, hebu si kufanya kurudia.

1309
00:56:37,460 --> 00:56:40,670
Hebu kunyakua kuzuia udhibiti,
na kufanya yafuatayo milele.

1310
00:56:40,670 --> 00:56:42,720
Forever, hoja hatua 10.

1311
00:56:42,720 --> 00:56:45,070
Na click Play.

1312
00:56:45,070 --> 00:56:45,600
>> SAWA.

1313
00:56:45,600 --> 00:56:46,740
Hivyo nashiriki, yeye ataacha.

1314
00:56:46,740 --> 00:56:49,710
Vinginevyo, watoto bila kupata upset sana
wakati wao aina ya kupoteza paka zao.

1315
00:56:49,710 --> 00:56:52,720
Lakini angalau siwezi Drag
naye tena kwenye screen.

1316
00:56:52,720 --> 00:56:56,177
Lakini hii si yote
kubwa ya mchezo au uhuishaji.

1317
00:56:56,177 --> 00:56:58,260
Itakuwa nzuri kama labda
yeye bounced mbali makali.

1318
00:56:58,260 --> 00:57:00,020
Hivyo tunafanya nini?

1319
00:57:00,020 --> 00:57:04,302
Nini kujenga tunahitaji kuwa na
Mwanzo kuamua bounce, unafikiri,

1320
00:57:04,302 --> 00:57:06,010
hata kama wewe sijawahi
kuonekana Scratch kabla?

1321
00:57:06,010 --> 00:57:06,593
Yeah, katika nyuma.

1322
00:57:06,593 --> 00:57:08,359
Watazamaji: Unahitaji
kama kuzuia au kama-basi.

1323
00:57:08,359 --> 00:57:10,650
DAVID Malan: Yeah, hivyo baadhi ya
aina ya kama kuzuia au kama-basi.

1324
00:57:10,650 --> 00:57:12,275
Hivyo kweli, tuna mmoja wa haya hapa.

1325
00:57:12,275 --> 00:57:14,500
Hivyo if-- hivyo basi mimi kupata
kuondoa harakati.

1326
00:57:14,500 --> 00:57:16,070
Hebu kuvuta hivyo ni kubwa.

1327
00:57:16,070 --> 00:57:16,890
Hivyo ni jinsi kuhusu hili.

1328
00:57:16,890 --> 00:57:21,920
Milele, kama Sensing--
tumekuwa si kuonekana hii kabla.

1329
00:57:21,920 --> 00:57:23,160
Nahitaji kujieleza Boolean.

1330
00:57:23,160 --> 00:57:25,970
Na zinageuka kama kugusa nini?

1331
00:57:25,970 --> 00:57:29,030
Kama kugusa makali,
je, nataka kufanya?

1332
00:57:29,030 --> 00:57:32,030
Naam, kama mimi kurejea Motion,
zamu nje, loo, siwezi kugeuka.

1333
00:57:32,030 --> 00:57:33,350
Napenda Drag huu katika hapa.

1334
00:57:33,350 --> 00:57:36,430
Kwa nini si mimi kwenda mbele na
kugeuka digrii 180?

1335
00:57:36,430 --> 00:57:38,190
>> Na sasa, napenda tu hoja mwishoni.

1336
00:57:38,190 --> 00:57:40,500
Mimi naweza kuweka harakati katika
mwanzo wala mwisho.

1337
00:57:40,500 --> 00:57:44,452
Lakini mantiki, kila wakati mimi hoja, mimi
wanataka kuangalia, mimi kugusa makali?

1338
00:57:44,452 --> 00:57:45,410
Mimi kugusa makali?

1339
00:57:45,410 --> 00:57:46,490
Mimi kugusa makali?

1340
00:57:46,490 --> 00:57:49,200
Hivyo kwamba kifikra mimi kugeuka kama hivyo.

1341
00:57:49,200 --> 00:57:51,190
Basi hebu kugonga kucheza.

1342
00:57:51,190 --> 00:57:52,030
>> SAWA.

1343
00:57:52,030 --> 00:57:53,910
Hivyo ni kidogo Buggy, hivyo kusema.

1344
00:57:53,910 --> 00:57:56,560
Na mdudu ni kosa ambalo
katika programu ya kompyuta.

1345
00:57:56,560 --> 00:57:57,800
Lakini angalau ni kazi.

1346
00:57:57,800 --> 00:57:59,420
Na kwa kweli, siwezi kwenda katika hapa.

1347
00:57:59,420 --> 00:58:03,130
Na napenda kufanya hivyo si hatua 10 katika
muda, lakini hii yote ni uhuishaji ni.

1348
00:58:03,130 --> 00:58:05,310
Hii ni cartoon zote
au hata movie ni.

1349
00:58:05,310 --> 00:58:07,110
Hebu hoja hatua 20 wakati huo.

1350
00:58:07,110 --> 00:58:11,200
Hivyo mara 20 kama mambo mengi yanayotokea
mara moja, au mara mbili kama wengi, katika kesi hii.

1351
00:58:11,200 --> 00:58:12,600
Na yeye kusonga kwa kasi.

1352
00:58:12,600 --> 00:58:15,150
Napenda mabadiliko ya 30.

1353
00:58:15,150 --> 00:58:17,450
100.

1354
00:58:17,450 --> 00:58:19,406
1,000.

1355
00:58:19,406 --> 00:58:20,530
Na itakuja kweli haraka.

1356
00:58:20,530 --> 00:58:22,190
Na hii is-- yeah, OK.

1357
00:58:22,190 --> 00:58:24,130
>> Hivyo sasa sisi ni messing tu na hayo.

1358
00:58:24,130 --> 00:58:24,954
OK, hivyo buggy.

1359
00:58:24,954 --> 00:58:26,620
Lakini tunaweza mtupeni nje ya njia hapa.

1360
00:58:26,620 --> 00:58:28,286
Lakini tunaweza kufanya zaidi ya kujifurahisha na hii, pia.

1361
00:58:28,286 --> 00:58:30,710
Jinsi kuhusu Haya yeye ni kichwa chini.

1362
00:58:30,710 --> 00:58:32,800
Lakini zinageuka Scratch--
na ni kweli kuna,

1363
00:58:32,800 --> 00:58:35,510
Mimi na WANAKANUSHA, hakuna kitaaluma
thamani ya nini mimi kuhusu kufanya.

1364
00:58:35,510 --> 00:58:40,200
Lakini kama mimi kufungua kipaza sauti, hebu
kumzuia na kufanya kitu kama hii.

1365
00:58:40,200 --> 00:58:41,960
Ouch!

1366
00:58:41,960 --> 00:58:42,884
>> [Laugh]

1367
00:58:42,884 --> 00:58:45,200

1368
00:58:45,200 --> 00:58:45,990
>> Hiyo ilikuwa ni adorable.

1369
00:58:45,990 --> 00:58:46,740
Asante.

1370
00:58:46,740 --> 00:58:50,850
Sasa, hii ni nini sauti yangu
Inaonekana kama wakati mimi kelele ouch.

1371
00:58:50,850 --> 00:58:52,630
Sidhani sisi hawakupata kicheko chenu.

1372
00:58:52,630 --> 00:58:53,280
Hiyo ni sawa.

1373
00:58:53,280 --> 00:58:56,550
Hebu kuokoa hii kama "ouch."

1374
00:58:56,550 --> 00:58:57,915
Hebu kuokoa hii kama "ouch".

1375
00:58:57,915 --> 00:58:59,410
Na sasa tutaweza kwenda nyuma ya Scripts.

1376
00:58:59,410 --> 00:59:01,660
Na sasa mimi need-- hebu angalia, Sound.

1377
00:59:01,660 --> 00:59:03,160
Oh, kucheza ouch sauti.

1378
00:59:03,160 --> 00:59:08,180
Hivyo kama mimi nina kugusa makali, napenda
kwanza kucheza ouch, na kisha kugeuka.

1379
00:59:08,180 --> 00:59:10,191
Na sasa hebu kumtia katikati.

1380
00:59:10,191 --> 00:59:14,754
>> [KUSEMA "ouch"]

1381
00:59:14,754 --> 00:59:15,740
>> Mara mbili kwa haraka.

1382
00:59:15,740 --> 00:59:20,660

1383
00:59:20,660 --> 00:59:21,830
>> SAWA.

1384
00:59:21,830 --> 00:59:23,780
Lakini ni literally
kufanya nini mimi kusema.

1385
00:59:23,780 --> 00:59:27,580
Hivyo ni kwa kweli sahihi, ni
kidogo tu annoying haraka.

1386
00:59:27,580 --> 00:59:30,330
Basi hebu kuongeza kitu
zaidi ya kuvutia na hili.

1387
00:59:30,330 --> 00:59:32,950
Hebu kweli kufungua
moja kwamba mimi alifanya mapema,

1388
00:59:32,950 --> 00:59:38,560
aptly aitwaye Pet
Paka, kwamba hana huu.

1389
00:59:38,560 --> 00:59:40,340
Hapa ni script hapa.

1390
00:59:40,340 --> 00:59:44,510
Nini ni hii kwenda
kufanya katika suala Kiingereza?

1391
00:59:44,510 --> 00:59:45,820
Nini hii imeundwa ili kufanya?

1392
00:59:45,820 --> 00:59:47,900
Yeah, hebu kwenda some-- yeah?

1393
00:59:47,900 --> 00:59:49,665
>> Watazamaji: Wakati wewe
pet paka, ni Meows.

1394
00:59:49,665 --> 00:59:52,290
DAVID Malan: Yeah, hivyo wakati wewe
pet paka, ni kwenda meow.

1395
00:59:52,290 --> 00:59:55,452
Hivyo kwa maneno mengine, kuna sasa
milele kitanzi bado, pamoja

1396
00:59:55,452 --> 00:59:57,660
na hali, pamoja
na kujieleza Boolean,

1397
00:59:57,660 --> 01:00:00,140
pamoja na wanandoa
ya kazi, athari

1398
01:00:00,140 --> 01:00:02,610
ambayo, mara moja mimi kucheza
mpango huu, ni kitu

1399
01:00:02,610 --> 01:00:06,820
kinachotokea mpaka mimi hoja ya mshale
karibu na karibu na karibu and--

1400
01:00:06,820 --> 01:00:08,029
>> [Meow]

1401
01:00:08,029 --> 01:00:09,320
Basi ni kama kufuga paka.

1402
01:00:09,320 --> 01:00:11,210
[Meow]

1403
01:00:11,210 --> 01:00:14,270
Mara moja tu wewe kweli
hoja ya mshale juu yake.

1404
01:00:14,270 --> 01:00:19,964
Sasa, mimi pia kuchapwa up hawana pet
paka, ambayo haina hii badala yake.

1405
01:00:19,964 --> 01:00:21,350
>> [Meowing]

1406
01:00:21,350 --> 01:00:23,485
>> Hivyo yeye tu mara kwa mara meowing.

1407
01:00:23,485 --> 01:00:24,455
>> [Meowing]

1408
01:00:24,455 --> 01:00:27,705
>> Lakini kama mimi kupata pia close--

1409
01:00:27,705 --> 01:00:29,645
>> [Meowing]

1410
01:00:29,645 --> 01:00:32,080
>> [Kishindo]

1411
01:00:32,080 --> 01:00:33,590
>> Hivyo ni jinsi gani kazi hii?

1412
01:00:33,590 --> 01:00:35,880
Sasa mimi tu na
njia mbili uma katika barabara.

1413
01:00:35,880 --> 01:00:38,930
Kama kugusa panya pointer,
kisha kucheza simba sauti.

1414
01:00:38,930 --> 01:00:41,950
Mwingine tu kucheza meow sauti,
na kisha kusubiri sekunde tatu ili

1415
01:00:41,950 --> 01:00:43,880
kwamba ni aina ya kufanya
ni tranquilly sana.

1416
01:00:43,880 --> 01:00:44,380
Sawa.

1417
01:00:44,380 --> 01:00:47,290
Hivyo hiyo ni kuchanganya
baadhi ya mawazo zaidi bado.

1418
01:00:47,290 --> 01:00:50,870
Hebu tuangalie mfano huu
Mimi kuchapwa up inaitwa nyuzi.

1419
01:00:50,870 --> 01:00:54,020
Na hii ni moja kimsingi
tofauti kwa kuwa leverages

1420
01:00:54,020 --> 01:00:56,070
hulka ya watu wengi
lugha ya programu inayoitwa

1421
01:00:56,070 --> 01:00:59,970
nyuzi, uwezo wa mpango wa
literally kufanya mambo mawili wakati huo huo.

1422
01:00:59,970 --> 01:01:03,600
Hakika, siku hizi kama wewe ni kutumia
Hati za Google au Microsoft Word,

1423
01:01:03,600 --> 01:01:09,620
na hati yako ni daima kuwa
Spell-kuchunguzwa hata kama wewe type-- au wewe

1424
01:01:09,620 --> 01:01:11,580
kugonga amri-P au Control-P
na magazeti kitu,

1425
01:01:11,580 --> 01:01:13,380
ni uchapishaji wakati wewe kuendelea kuandika.

1426
01:01:13,380 --> 01:01:16,680
Mipango leo unaweza kweli kufanya mbalimbali
mambo kwa mara moja, kama vile katika Scratch

1427
01:01:16,680 --> 01:01:17,180
hapa.

1428
01:01:17,180 --> 01:01:20,400
>> Hivyo hapa, nina sprites mbili
sasa, ndege na paka.

1429
01:01:20,400 --> 01:01:22,780
Na kama mimi bonyeza juu ya kila mmoja
wale wahusika kwa wakati mmoja,

1430
01:01:22,780 --> 01:01:25,590
Mimi naona sasa hivi ndege
scripts katika haki juu.

1431
01:01:25,590 --> 01:01:27,270
Sasa naona paka.

1432
01:01:27,270 --> 01:01:28,540
Ndege, paka.

1433
01:01:28,540 --> 01:01:30,270
Hivyo kila mmoja wao na script yao wenyewe.

1434
01:01:30,270 --> 01:01:32,700
Lakini sikia, nini puzzle kipande
gani wao wote kuanza na?

1435
01:01:32,700 --> 01:01:34,260
Wakati bendera ya kijani clicked.

1436
01:01:34,260 --> 01:01:36,890
Na ndege, wakati bendera ya kijani clicked.

1437
01:01:36,890 --> 01:01:40,870
Hivyo wakati mimi bonyeza bendera ya kijani,
wote wawili wa scripts wale au mipango

1438
01:01:40,870 --> 01:01:42,759
ni kwenda kukimbia katika sambamba.

1439
01:01:42,759 --> 01:01:45,800
Na wewe utakuwa taarifa kwamba ndege ni
tu mindlessly bouncing off makali.

1440
01:01:45,800 --> 01:01:50,890
paka wazi imekuwa iliyowekwa
kwa faida ya kimkakati.

1441
01:01:50,890 --> 01:01:52,704
And--

1442
01:01:52,704 --> 01:01:53,490
>> [Kishindo]

1443
01:01:53,490 --> 01:01:53,821

1444
01:01:53,821 --> 01:01:54,320
Sawa.

1445
01:01:54,320 --> 01:01:57,340
Hivyo paka hawakupata ndege katika kesi hii.

1446
01:01:57,340 --> 01:01:58,390
Kwanini hivyo?

1447
01:01:58,390 --> 01:02:03,310
Naam, taarifa ya kwanza sisi tu na
ndege tu mindlessly kwenda

1448
01:02:03,310 --> 01:02:05,120
kwa eneo hii ya awali,
na kisha milele,

1449
01:02:05,120 --> 01:02:06,774
kama si kugusa paka, tu hoja.

1450
01:02:06,774 --> 01:02:08,190
Na kama wewe ni juu ya makali, Bounce.

1451
01:02:08,190 --> 01:02:08,870
Na hoja tu.

1452
01:02:08,870 --> 01:02:10,286
Na kama wewe ni juu ya makali, Bounce.

1453
01:02:10,286 --> 01:02:12,840
Lakini paka, wakati huo huo,
ina baadhi ya mantiki ya ziada

1454
01:02:12,840 --> 01:02:18,250
kwamba anasema Haya kwanza, ili tu
kwamba hii si upendeleo kabisa

1455
01:02:18,250 --> 01:02:21,191
dhidi ya ndege, taarifa kwamba mimi wameweza
kutumika kijani puzzle kipande pale

1456
01:02:21,191 --> 01:02:22,690
kwamba kweli tar idadi random.

1457
01:02:22,690 --> 01:02:26,179
hulka ya lugha nyingi ni kutoa
wewe random au pseudorandom idadi.

1458
01:02:26,179 --> 01:02:29,220
Hivyo katika kesi hii, paka awali
akiamua idadi random kati ya, kama,

1459
01:02:29,220 --> 01:02:31,727
nyuzi 90 na 180
digrii, kimsingi, hivyo

1460
01:02:31,727 --> 01:02:33,310
kwamba kuna kidogo ya ugomvi.

1461
01:02:33,310 --> 01:02:37,000
Na kisha milele, kama kugusa
ndege, kucheza simba sauti.

1462
01:02:37,000 --> 01:02:38,754
Vinginevyo, tu kumweka kuelekea ndege.

1463
01:02:38,754 --> 01:02:39,670
Kumweka kuelekea ndege.

1464
01:02:39,670 --> 01:02:44,199
Point kuelekea ndege, ambayo ni
kipande puzzle kwa yenyewe katika kesi hii.

1465
01:02:44,199 --> 01:02:45,740
Naam, tunaweza kufanya jambo moja nyingine hapa.

1466
01:02:45,740 --> 01:02:49,820
Hebu kufungua mpango matukio hapa.

1467
01:02:49,820 --> 01:02:53,520
Na hapa sisi tena kuwa na sprites mbili,
ambayo kuangalia kama vibaraka hawa wawili hapa.

1468
01:02:53,520 --> 01:02:55,710
Na nini kuvutia hapa ni hii.

1469
01:02:55,710 --> 01:02:59,140
machungwa guy ina hii
seti ya vipande puzzle hapa.

1470
01:02:59,140 --> 01:03:01,700
Forever kufanya following--
kama nafasi bar ni taabu,

1471
01:03:01,700 --> 01:03:05,430
basi sema, Marco, na
kisha matangazo ya tukio hilo.

1472
01:03:05,430 --> 01:03:09,460
Na wakati huo huo, guy bluu hapa ina
Haya wakati kupokea tukio,

1473
01:03:09,460 --> 01:03:10,540
kusema Polo.

1474
01:03:10,540 --> 01:03:12,850
Hivyo ni zamu nje katika Scratch
na katika lugha nyingine,

1475
01:03:12,850 --> 01:03:15,830
kuna njia kwa ajili ya programu mbili
au scripts mbili, katika kesi hii,

1476
01:03:15,830 --> 01:03:20,310
kwa intercommunicate hivyo kwamba wakati mimi
hit nafasi bar, anasema Marco.

1477
01:03:20,310 --> 01:03:23,539
Na mtu mwingine anasikia kwamba, hivyo
kusema, na anasema Polo katika majibu.

1478
01:03:23,539 --> 01:03:26,080
Hivyo unaweza kuandika mipango ya
kweli kuingiliana kwa njia hii.

1479
01:03:26,080 --> 01:03:28,630
Na kama mimi kufanya hii moja badala yake,
Siwezi hata kuongeza vigezo,

1480
01:03:28,630 --> 01:03:31,287
tu kwa kutumia sprite moja katika kesi hii.

1481
01:03:31,287 --> 01:03:32,578
Hii moja hasa annoying.

1482
01:03:32,578 --> 01:03:36,174
>> [SEAL Barking]

1483
01:03:36,174 --> 01:03:37,100

1484
01:03:37,100 --> 01:03:42,490
>> Sasa, taarifa juu ya haki sisi tumepewa
baadhi mantiki ya ziada zaidi ya hapa.

1485
01:03:42,490 --> 01:03:45,146
Je, mimi kuacha muhuri hii kutoka barking?

1486
01:03:45,146 --> 01:03:48,320
>> [SEAL Barking]

1487
01:03:48,320 --> 01:03:52,830

1488
01:03:52,830 --> 01:03:55,630
>> Inaonekana kama juu ya mkono wa kulia
upande ni nini kucheza sauti.

1489
01:03:55,630 --> 01:03:58,500
Lakini ni kucheza tu
sauti kama yaliyo ya kweli?

1490
01:03:58,500 --> 01:04:03,390
Kama machungwa kutofautiana
block-- kimya ni sifuri.

1491
01:04:03,390 --> 01:04:07,916
Je, mimi kubadili kimya kuwa 1,
maana kweli, kufanya hii kimya?

1492
01:04:07,916 --> 01:04:12,455
Inavyoonekana, script mengine, naweza
kugonga bar nafasi, na sasa yeye ataacha.

1493
01:04:12,455 --> 01:04:15,080
Ili tuweze kuwa na intercommunication hii
hela scripts, kama vile,

1494
01:04:15,080 --> 01:04:18,349
na tu kugawana kutofautiana
hela mbili kama hii.

1495
01:04:18,349 --> 01:04:19,890
Sasa, hii si yote ya kuvutia.

1496
01:04:19,890 --> 01:04:24,360
Hebu kwenda mbele na kufanya hili na kuchanganya
mengi ya mawazo haya na mpango huu

1497
01:04:24,360 --> 01:04:25,940
hapa.

1498
01:04:25,940 --> 01:04:28,100
Kabla ya sisi kufanya hivyo, ingawa,
vipi kuhusu kujitolea moja?

1499
01:04:28,100 --> 01:04:30,558
Napenda kuchukua shinikizo mbali
ya kwangu kwa sababu mimi si kweli

1500
01:04:30,558 --> 01:04:31,280
kucheza mchezo huu.

1501
01:04:31,280 --> 01:04:33,030
Hebu kuwa mtu sisi
hawajaona kabla.

1502
01:04:33,030 --> 01:04:36,420
Wewe kuwa vizuri kuja
juu ya hatua hapa, juu ya kamera.

1503
01:04:36,420 --> 01:04:37,430
OK, kuja juu juu.

1504
01:04:37,430 --> 01:04:38,130
jasiri sana.

1505
01:04:38,130 --> 01:04:39,052
Jina lako nani?

1506
01:04:39,052 --> 01:04:39,962
>> IDRIS: Idris.

1507
01:04:39,962 --> 01:04:40,753
DAVID Malan: Sorry?

1508
01:04:40,753 --> 01:04:41,196
IDRIS: Idris.

1509
01:04:41,196 --> 01:04:42,670
DAVID Malan: Idris, vyema kukutana na wewe.

1510
01:04:42,670 --> 01:04:43,170
Kuja juu juu.

1511
01:04:43,170 --> 01:04:45,630
Na sasa, kwenye simu yako mwenyewe
simu, je, kucheza Pokemon GO?

1512
01:04:45,630 --> 01:04:46,567
>> IDRIS: Hapana

1513
01:04:46,567 --> 01:04:47,400
DAVID Malan: Kweli?

1514
01:04:47,400 --> 01:04:48,104
IDRIS: Yeah.

1515
01:04:48,104 --> 01:04:48,770
DAVID Malan: Sawa.

1516
01:04:48,770 --> 01:04:49,020
Sawa.

1517
01:04:49,020 --> 01:04:49,978
Naam, vyema kukutana na wewe.

1518
01:04:49,978 --> 01:04:50,820
Kuja juu juu.

1519
01:04:50,820 --> 01:04:51,950
Mimi si aidha.

1520
01:04:51,950 --> 01:04:55,380
Hivyo tutaweza kufikiri kwa pamoja jinsi ya
kucheza hii, ambayo mtu kweli

1521
01:04:55,380 --> 01:05:00,140
akaenda na kutekelezwa katika Scratch
kwa kubadilisha paka kimsingi

1522
01:05:00,140 --> 01:05:02,260
wahusika mbalimbali wote pamoja.

1523
01:05:02,260 --> 01:05:04,870
Na kama mimi skrini nzima
hii hapa, tunakwenda

1524
01:05:04,870 --> 01:05:06,860
kuona mchezo kufuatia pamoja.

1525
01:05:06,860 --> 01:05:09,560
Bado inapakia, bado upakiaji.

1526
01:05:09,560 --> 01:05:10,270
Kuja juu.

1527
01:05:10,270 --> 01:05:12,590
Napenda kufanya hivyo.

1528
01:05:12,590 --> 01:05:14,520
Kuja juu.

1529
01:05:14,520 --> 01:05:17,200
Mchezo huu ni hivyo kubwa kwamba kugonga.

1530
01:05:17,200 --> 01:05:18,980
Kusimama kwa.

1531
01:05:18,980 --> 01:05:22,390
Jaribu hii kwa mara nyingine.

1532
01:05:22,390 --> 01:05:23,710
Kuja juu.

1533
01:05:23,710 --> 01:05:24,211
Sawa.

1534
01:05:24,211 --> 01:05:26,840

1535
01:05:26,840 --> 01:05:27,430
>> Kuna sisi kwenda.

1536
01:05:27,430 --> 01:05:27,929
SAWA.

1537
01:05:27,929 --> 01:05:29,330
Green flag.

1538
01:05:29,330 --> 01:05:30,190
Hivyo hapa sisi kwenda.

1539
01:05:30,190 --> 01:05:30,950
>> [Music kucheza]

1540
01:05:30,950 --> 01:05:32,510
>> Kuchagua ngazi ya katikati hapa.

1541
01:05:32,510 --> 01:05:34,200
Bofya guy bluu huko.

1542
01:05:34,200 --> 01:05:34,700
Sawa.

1543
01:05:34,700 --> 01:05:37,860
Na unaweza kutumia mshale
keys-- juu, chini, kushoto, kulia.

1544
01:05:37,860 --> 01:05:42,150
Sasa, hebu fikiria kama sisi kufanya Haya
na kisha kwenda baada ya tabia huko.

1545
01:05:42,150 --> 01:05:42,650
Yep.

1546
01:05:42,650 --> 01:05:45,786
Na sasa click yake na panya.

1547
01:05:45,786 --> 01:05:46,693
Oh ndio.

1548
01:05:46,693 --> 01:05:47,193
Hoja.

1549
01:05:47,193 --> 01:05:47,662
Wapi mshale?

1550
01:05:47,662 --> 01:05:48,131
Hapa kwenda.

1551
01:05:48,131 --> 01:05:48,600
Hivyo bonyeza hapo.

1552
01:05:48,600 --> 01:05:48,840
Yeah.

1553
01:05:48,840 --> 01:05:49,340
Sawa.

1554
01:05:49,340 --> 01:05:56,008
Hivyo sasa, mimi nina habari una Poke mpira,
kwamba kama click yake, itakuwa kufanya hivyo.

1555
01:05:56,008 --> 01:05:57,932
Vizuri sana.

1556
01:05:57,932 --> 01:06:00,390
Katika mazoezi kwa leo, mimi
kupatikana hili toleo la mchezo wa

1557
01:06:00,390 --> 01:06:01,760
kweli si ngumu sana.

1558
01:06:01,760 --> 01:06:07,650
Hivyo kama unataka kwenda tena hapa,
kutembea chini ya hii mpira Poke.

1559
01:06:07,650 --> 01:06:08,780
Na kisha kwenda kuchukua haki.

1560
01:06:08,780 --> 01:06:11,200
Jaribu kubonyeza juu yake.

1561
01:06:11,200 --> 01:06:13,120
Oh, kwa kweli, hiyo ni
duka, inaonekana.

1562
01:06:13,120 --> 01:06:14,170
OK hivyo karibu kwamba.

1563
01:06:14,170 --> 01:06:15,150
Kamwe kufanyika kwamba kabla.

1564
01:06:15,150 --> 01:06:16,566
Labda kwenda hadi jambo hili hapa.

1565
01:06:16,566 --> 01:06:17,460
Oh, kuna kwenda.

1566
01:06:17,460 --> 01:06:18,910
Kusubiri, kuna moja zaidi ya hapo.

1567
01:06:18,910 --> 01:06:20,412
Oh, kuna mwingine.

1568
01:06:20,412 --> 01:06:21,285
SAWA.

1569
01:06:21,285 --> 01:06:21,785
Chini.

1570
01:06:21,785 --> 01:06:23,210
Yeah, click.

1571
01:06:23,210 --> 01:06:24,635
>> OK, hiyo ni cute sana.

1572
01:06:24,635 --> 01:06:27,485

1573
01:06:27,485 --> 01:06:28,810
OK, vizuri sana kufanyika.

1574
01:06:28,810 --> 01:06:30,010
Mchezo huu si ngumu sana.

1575
01:06:30,010 --> 01:06:30,510
SAWA.

1576
01:06:30,510 --> 01:06:32,150
Hongera.

1577
01:06:32,150 --> 01:06:34,720
Hapa, tuna CS50
matatizo mpira kwa ajili yenu.

1578
01:06:34,720 --> 01:06:37,680
Lakini fikiria kwa muda tu kile
baadhi ya takeaways ni huko.

1579
01:06:37,680 --> 01:06:39,263
Rahisi zaidi kuliko mchezo halisi, inaonekana.

1580
01:06:39,263 --> 01:06:41,809
Lakini wote tuna kwenda
hapa ni tabia

1581
01:06:41,809 --> 01:06:44,100
kwamba pengine ina aina fulani
ya kitanzi yanayohusiana na hayo.

1582
01:06:44,100 --> 01:06:44,590
Siyo paka.

1583
01:06:44,590 --> 01:06:45,860
Ni tabia hii badala yake.

1584
01:06:45,860 --> 01:06:49,052
Na kwamba kitanzi ni tu mara kwa mara
akisema, ikiwa hadi mshale taabu,

1585
01:06:49,052 --> 01:06:51,260
kama mshale chini taabu, kama
kushoto arrow taabu au kulia

1586
01:06:51,260 --> 01:06:53,960
mshale taabu, hoja juu
au chini au kushoto au kulia.

1587
01:06:53,960 --> 01:06:57,870
Au kama kuna mwingine puzzle kipande pale
kwamba anasema wakati kugusa sprite mwingine,

1588
01:06:57,870 --> 01:07:01,320
wakati kugusa mmoja wa wahusika
kwa Poke mpira, kama kugusa,

1589
01:07:01,320 --> 01:07:02,440
kisha kufanya hivyo.

1590
01:07:02,440 --> 01:07:04,800
>> Basi wote wa mawazo tumekuwa
wamekuwa wakitumia hivi sasa kweli

1591
01:07:04,800 --> 01:07:09,130
unaweza tu kutumika katika hii hasa
mazingira kwa kucheza mchezo huu, kama vile.

1592
01:07:09,130 --> 01:07:13,580
Hebu kwenda mbele na kuvuta
up mtu mwingine hapa, kwa kweli.

1593
01:07:13,580 --> 01:07:17,060
Hebu kwenda mbele na kuvuta
up, hebu sema, hii.

1594
01:07:17,060 --> 01:07:18,540
Hii ni kitu sisi remixed.

1595
01:07:18,540 --> 01:07:20,329
Yaliyotolewa na mmoja wa wetu
wanafunzi katika Cambridge,

1596
01:07:20,329 --> 01:07:23,370
na kisha nilikwenda kupitia na iliyopita
pretty much kila mfano wa Harvard

1597
01:07:23,370 --> 01:07:25,580
kwa Yale wakati huu.

1598
01:07:25,580 --> 01:07:27,870
Je, mtu kama
kushindana dhidi ya Ivies

1599
01:07:27,870 --> 01:07:31,650
hapa katika mkusanyiko mwingine
ya yote ya mawazo haya?

1600
01:07:31,650 --> 01:07:32,662
Kuja juu chini, ndiyo.

1601
01:07:32,662 --> 01:07:33,370
Jina lako nani?

1602
01:07:33,370 --> 01:07:34,190
>> DINA: Dina.

1603
01:07:34,190 --> 01:07:35,015
>> DAVID Malan: Adina?

1604
01:07:35,015 --> 01:07:35,380
>> DINA: Dina.

1605
01:07:35,380 --> 01:07:36,410
>> DAVID Malan: Dina, kuja juu chini.

1606
01:07:36,410 --> 01:07:37,320
Yote ya haki, Dina.

1607
01:07:37,320 --> 01:07:40,780
Hivyo mchezo huu anapata vigumu na
vigumu, kwa sababu katika mchezo huu,

1608
01:07:40,780 --> 01:07:43,970
kuna vigezo kuwa kutumika kama vizuri
kwamba ni daima kuweka wimbo

1609
01:07:43,970 --> 01:07:45,930
ya nini ngazi ya wewe ni katika mchezo.

1610
01:07:45,930 --> 01:07:47,120
Hivyo nzuri ya kukutana na wewe.

1611
01:07:47,120 --> 01:07:48,250
Kuja karibu hapa.

1612
01:07:48,250 --> 01:07:51,460
Na hivyo lengo hapa ni kutatua
ya kufanya njia yako kwa njia ya mlolongo

1613
01:07:51,460 --> 01:07:52,710
kwamba mwanafunzi huu kutekelezwa.

1614
01:07:52,710 --> 01:07:55,334
>> Na tu kuweka hatua, kila
ya picha hizi juu ya screen

1615
01:07:55,334 --> 01:07:57,222
ni sprite yake mwenyewe, tabia yake mwenyewe.

1616
01:07:57,222 --> 01:07:59,680
Hivyo hawa ndio na paka msingi,
lakini mwanafunzi iliyopita yao

1617
01:07:59,680 --> 01:08:01,480
kwa mbalimbali nembo Ivies hapa.

1618
01:08:01,480 --> 01:08:04,370
Na kisha utaona kwamba tu
kwa kutumia masharti na loops

1619
01:08:04,370 --> 01:08:06,848
na kazi na zaidi, unaweza kupata hii.

1620
01:08:06,848 --> 01:08:07,478
>> [Music kucheza]

1621
01:08:07,478 --> 01:08:09,228
[MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1622
01:08:09,228 --> 01:08:13,060

1623
01:08:13,060 --> 01:08:14,018
>> Yeah, OK.

1624
01:08:14,018 --> 01:08:17,371

1625
01:08:17,371 --> 01:08:20,110
Yeah, kuendelea.

1626
01:08:20,110 --> 01:08:21,180
ngazi ya kwanza ya rahisi sana.

1627
01:08:21,180 --> 01:08:22,554
Ve tu got kwenda zaidi ya hapo.

1628
01:08:22,554 --> 01:08:25,644
Lakini tena, fikiria, hii ni
kitanzi kusikiliza kwa mshale keys--

1629
01:08:25,644 --> 01:08:26,560
juu, chini, kushoto, kulia.

1630
01:08:26,560 --> 01:08:28,320
Na sasa kuzuia kuhisi.

1631
01:08:28,320 --> 01:08:29,345
Nzuri sana.

1632
01:08:29,345 --> 01:08:32,600
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1633
01:08:32,600 --> 01:08:40,340

1634
01:08:40,340 --> 01:08:41,288
>> Nzuri sana.

1635
01:08:41,288 --> 01:08:44,550
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1636
01:08:44,550 --> 01:08:55,540

1637
01:08:55,540 --> 01:08:56,430
>> Nzuri sana.

1638
01:08:56,430 --> 01:08:57,975
Pretty rahisi, Crimson.

1639
01:08:57,975 --> 01:08:59,060
Sawa.

1640
01:08:59,060 --> 01:09:00,250
Levels-- uh-oh.

1641
01:09:00,250 --> 01:09:02,380
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1642
01:09:02,380 --> 01:09:04,980

1643
01:09:04,980 --> 01:09:07,150
>> Na tena, katika hizi
tatu Harvard crests,

1644
01:09:07,150 --> 01:09:10,334
wewe tu na mantiki
akisema kama makali, Bounce.

1645
01:09:10,334 --> 01:09:13,238
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1646
01:09:13,238 --> 01:09:14,690

1647
01:09:14,690 --> 01:09:17,651
>> OK, nini unafanya ni
kuvutia zaidi kuliko nini.

1648
01:09:17,651 --> 01:09:18,150
Nzuri sana.

1649
01:09:18,150 --> 01:09:18,810
Nzuri sana.

1650
01:09:18,810 --> 01:09:20,270
Uh-oh.

1651
01:09:20,270 --> 01:09:23,350
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1652
01:09:23,350 --> 01:09:26,005

1653
01:09:26,005 --> 01:09:27,630
Nadhani wewe kuwa na sadaka wewe mwenyewe.

1654
01:09:27,630 --> 01:09:30,372
[MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1655
01:09:30,372 --> 01:09:30,872
Quick!

1656
01:09:30,872 --> 01:09:34,848

1657
01:09:34,848 --> 01:09:38,824
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1658
01:09:38,824 --> 01:09:44,288

1659
01:09:44,288 --> 01:09:44,788
Nice.

1660
01:09:44,788 --> 01:09:52,240

1661
01:09:52,240 --> 01:09:52,740
Hiyo ni sawa.

1662
01:09:52,740 --> 01:09:53,770
Itabidi kupata.

1663
01:09:53,770 --> 01:09:56,304
Ndiyo, ndiyo!

1664
01:09:56,304 --> 01:09:58,256
Nzuri sana.

1665
01:09:58,256 --> 01:10:01,184
>> [Wakishangilia]

1666
01:10:01,184 --> 01:10:02,160

1667
01:10:02,160 --> 01:10:05,576
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1668
01:10:05,576 --> 01:10:09,480

1669
01:10:09,480 --> 01:10:10,940
>> Nice!

1670
01:10:10,940 --> 01:10:14,370
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1671
01:10:14,370 --> 01:10:39,050

1672
01:10:39,050 --> 01:10:39,550
Nimeelewa.

1673
01:10:39,550 --> 01:10:41,510
Kuja juu!

1674
01:10:41,510 --> 01:10:43,470
Pili ngazi ya mwisho.

1675
01:10:43,470 --> 01:10:46,900
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1676
01:10:46,900 --> 01:10:49,588

1677
01:10:49,588 --> 01:10:50,580
>> Sawa.

1678
01:10:50,580 --> 01:10:54,052
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1679
01:10:54,052 --> 01:11:00,992

1680
01:11:00,992 --> 01:11:01,492
Ndiyo.

1681
01:11:01,492 --> 01:11:06,230

1682
01:11:06,230 --> 01:11:08,020
matumizi mazuri ya vigezo hapa.

1683
01:11:08,020 --> 01:11:09,770
[MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1684
01:11:09,770 --> 01:11:10,770
Ndiyo.

1685
01:11:10,770 --> 01:11:14,743
[MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1686
01:11:14,743 --> 01:11:16,707

1687
01:11:16,707 --> 01:11:17,689
Nice.

1688
01:11:17,689 --> 01:11:21,126
[MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1689
01:11:21,126 --> 01:11:23,581

1690
01:11:23,581 --> 01:11:24,570
Ni sawa.

1691
01:11:24,570 --> 01:11:25,770
Tulipata kupata mwisho.

1692
01:11:25,770 --> 01:11:26,270
Huko.

1693
01:11:26,270 --> 01:11:27,010
Ah!

1694
01:11:27,010 --> 01:11:29,980
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1695
01:11:29,980 --> 01:11:32,160

1696
01:11:32,160 --> 01:11:34,866
>> Ili kukimbia marehemu leo, lakini
ni gonna kuwa thamani yake.

1697
01:11:34,866 --> 01:11:38,200
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1698
01:11:38,200 --> 01:11:39,640

1699
01:11:39,640 --> 01:11:42,520
>> Unaweza kufanya hivyo!

1700
01:11:42,520 --> 01:11:43,480
Yeah!

1701
01:11:43,480 --> 01:11:46,278
>> [Wakishangilia]

1702
01:11:46,278 --> 01:11:47,230

1703
01:11:47,230 --> 01:11:50,086
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1704
01:11:50,086 --> 01:11:51,470
>> Hii moja ngumu kweli kweli.

1705
01:11:51,470 --> 01:11:54,070
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1706
01:11:54,070 --> 01:11:57,458

1707
01:11:57,458 --> 01:11:59,000
>> Tutaweza kukupa maisha mbili zaidi.

1708
01:11:59,000 --> 01:11:59,968
Je, unaweza kufanya hivyo?

1709
01:11:59,968 --> 01:12:03,356
>> [MUSIC - MC HAMMER, "U hawezi kugusa
 HII "]

1710
01:12:03,356 --> 01:12:06,744

1711
01:12:06,744 --> 01:12:07,244
>> Sawa.

1712
01:12:07,244 --> 01:12:09,160
Jinsi pande zote kubwa
makofi hata hivyo.

1713
01:12:09,160 --> 01:12:10,800
You got pili ngazi ya mwisho.

1714
01:12:10,800 --> 01:12:11,723
Asante.

1715
01:12:11,723 --> 01:12:14,964
>> [Makofi]

1716
01:12:14,964 --> 01:12:15,890

1717
01:12:15,890 --> 01:12:19,600
>> Hivyo hii ni tu kusema ni kiasi gani wewe
unaweza kufanya na aina hii ya mambo.

1718
01:12:19,600 --> 01:12:21,892
Na kutambua, pia kwamba wakati
vipande puzzle hawana exist--

1719
01:12:21,892 --> 01:12:24,891
na kwa kweli, hii ni kwenda kuwa moja
wa madaraka na tatizo la kwanza

1720
01:12:24,891 --> 01:12:27,080
seti na beyond-- ni
kweli kuunda yako mwenyewe.

1721
01:12:27,080 --> 01:12:28,860
Na hii ni snippet
wa moja ya mifano

1722
01:12:28,860 --> 01:12:30,230
wewe utakuwa na uwezo wa kucheza
na online, ambapo

1723
01:12:30,230 --> 01:12:33,380
kama huna wamejenga katika Scratch
kitu kama kikohozi puzzle kipande,

1724
01:12:33,380 --> 01:12:35,470
unaweza kweli kufanya hivyo mwenyewe.

1725
01:12:35,470 --> 01:12:37,387
>> Na hivyo yote haya na zaidi watapata.

1726
01:12:37,387 --> 01:12:39,470
Na tu kuchora mwisho
picha ya kweli ni nini

1727
01:12:39,470 --> 01:12:43,120
mbele katika kuhifadhi kwa ajili ya darasa kwa ajili yenu,
msingi baadhi ya picha kutoka wanafunzi

1728
01:12:43,120 --> 01:12:46,970
siku za nyuma, naomba dim taa
mara moja ya mwisho na kuonyesha CS50.

1729
01:12:46,970 --> 01:12:49,580

1730
01:12:49,580 --> 01:12:53,038
>> [Music kucheza]

1731
01:12:53,038 --> 01:14:38,210

1732
01:14:38,210 --> 01:14:38,860
>> Sawa.

1733
01:14:38,860 --> 01:14:41,540
Hiyo ni kwa CS50.

1734
01:14:41,540 --> 01:14:44,964
Keki ni sasa aliwahi.

1735
01:14:44,964 --> 01:14:50,610

1736
01:14:50,610 --> 01:14:53,960
>> [Music kucheza]

1737
01:14:53,960 --> 01:15:07,624