1 00:00:00,000 --> 00:00:12,150 2 00:00:12,150 --> 00:00:13,470 >> DAVID J. Malan: Hello, dunia. 3 00:00:13,470 --> 00:00:16,670 Jina langu ni David Malan, na hii ni CS50 kuishi. 4 00:00:16,670 --> 00:00:20,060 Ni tabia mbaya, kama wewe ni Mitsubishi katika hili mkondo, wewe ni mwanafunzi katika CS50x na 5 00:00:20,060 --> 00:00:23,990 CS50 labda kwa njia ya EDX, Harvard Chuo au Harvard Extension School. 6 00:00:23,990 --> 00:00:27,340 Naam, kwa sababu mengi ya kozi vifaa siku hizi ni zinazotolewa na wewe 7 00:00:27,340 --> 00:00:30,500 juu ya video, sisi mawazo tunatarajia kufanya hivyo, lakini wakati huu kufanya ni kidogo 8 00:00:30,500 --> 00:00:33,110 kuvutia na kwa kweli matangazo yote ya kuishi hii. 9 00:00:33,110 --> 00:00:36,130 Hivyo kama unaweza kuona mimi safari, kama unaweza kuona mimi misspeak, kama unaweza kuona kwangu screw up, kila 10 00:00:36,130 --> 00:00:40,290 ya kwamba kinachotokea literally haki sasa katika Cambridge, Massachusetts juu ya 11 00:00:40,290 --> 00:00:41,570 Ijumaa asubuhi hapa. 12 00:00:41,570 --> 00:00:45,870 >> Vizuri, tulidhani bila kwanza kutoa hisia - tazama, huko ni. 13 00:00:45,870 --> 00:00:47,930 Hii ni CS50 kuishi, tayari. 14 00:00:47,930 --> 00:00:50,410 Hivyo juu ya wanandoa wa zamani wa wiki, watu wamekuwa posting maswali ya 15 00:00:50,410 --> 00:00:52,560 Reddit na kuungana na Twitter na kadhalika. 16 00:00:52,560 --> 00:00:54,820 Na mmoja wao hasa hawakupata macho yetu kwamba sisi mawazo ili kuwa na 17 00:00:54,820 --> 00:00:56,020 mara nyingi aliuliza swali. 18 00:00:56,020 --> 00:00:57,820 Kwa hiyo, nimeona Ningependa kusoma wewe hapa kuishi. 19 00:00:57,820 --> 00:00:58,860 >> Hivyo katika Wiki 0. 20 00:00:58,860 --> 00:01:02,450 Mtu mwingine hisia kuchanganyikiwa kidogo na / au kuzidiwa tayari? 21 00:01:02,450 --> 00:01:04,099 Naam, hii alikuwa posted juu ya Reddit. 22 00:01:04,099 --> 00:01:06,290 Na mwanafunzi alifafanua kama ifuatavyo - 23 00:01:06,290 --> 00:01:07,875 Sina mengi uzoefu kabla. 24 00:01:07,875 --> 00:01:10,980 Je, kwamba kuwa ni kwa nini mimi wanaonekana kuwa kuambukizwa juu ya taratibu zaidi kuliko 25 00:01:10,980 --> 00:01:12,610 watu wengine posting hapa? 26 00:01:12,610 --> 00:01:15,780 Mimi nina kweli nia ya haya yote, lakini mwanzo ni utata kidogo kwa 27 00:01:15,780 --> 00:01:16,870 mimi kwa sababu fulani. 28 00:01:16,870 --> 00:01:18,520 Mimi si wanaonekana kujua wapi kuanza. 29 00:01:18,520 --> 00:01:21,680 Nifanye nini kujaribu na kufahamu yote haya kidogo bora? 30 00:01:21,680 --> 00:01:24,410 Mimi nina tamaa kwamba mimi niko tayari kupata kuchanganyikiwa. 31 00:01:24,410 --> 00:01:27,550 >> Hivyo hii ni kabisa, kwa kweli, aliuliza swali mara nyingi. 32 00:01:27,550 --> 00:01:30,700 Kwa kweli, kama wewe tuned katika Wiki 0 ya hotuba tayari, wewe utakuwa kujua kwamba katika 33 00:01:30,700 --> 00:01:35,190 angalau hapa juu ya chuo, 73% ya yako wanafunzi wenzao hapa na hakuna kabla ya 34 00:01:35,190 --> 00:01:36,310 Programing uzoefu. 35 00:01:36,310 --> 00:01:39,510 Na kutambua pia kwamba, mengi ya chatter katika Picha na Twitter na 36 00:01:39,510 --> 00:01:42,940 Reddit sasa ni labda upendeleo kwa wale wanafunzi ambao tayari kufanya na 37 00:01:42,940 --> 00:01:44,440 faraja kidogo zaidi na savvy. 38 00:01:44,440 --> 00:01:46,620 Na kwamba, baada ya yote, kwa nini wao ni gravitating kuelekea 39 00:01:46,620 --> 00:01:48,440 fomu hizo hivyo haraka. 40 00:01:48,440 --> 00:01:52,290 >> Hivyo kwa hakika, si kuwa na kuzidiwa na hivyo miradi mingi ya ajabu kwamba 41 00:01:52,290 --> 00:01:55,220 tayari kuwa pamoja katika Scratch Nyumba ya sanaa, kama vile juu ya Reddit 42 00:01:55,220 --> 00:01:55,850 na kuungana. 43 00:01:55,850 --> 00:01:58,820 Lakini kwa kweli kuchukua faraja katika ukweli kwamba kuna mamia, bali 44 00:01:58,820 --> 00:02:01,650 literally maelfu ya wengine watu tu kama wewe. 45 00:02:01,650 --> 00:02:05,420 Na wao wanaweza kuwa kuzungumza juu, lakini wao ni huko nje kweli. 46 00:02:05,420 --> 00:02:07,150 >> Kwa hiyo kile ni CS50 live maana ya kuwa? 47 00:02:07,150 --> 00:02:09,940 Hii ni kwenda kuwa nafasi kwa yetu, kila mara moja kwa wakati, kwa kusema 48 00:02:09,940 --> 00:02:11,025 na kurudi kuishi. 49 00:02:11,025 --> 00:02:15,520 Na tutaweza ama kuchukua katika maswali kupitia video, au kufanya kazi nzuri ya kuruhusu, katika 50 00:02:15,520 --> 00:02:19,770 baadaye, hata tune katika mwenyewe kuishi kupitia kuishi Streaming video. 51 00:02:19,770 --> 00:02:23,240 >> Lakini kwa sasa, sisi tumepewa idadi ya furaha makundi tayari kwa ajili yenu, kwanza 52 00:02:23,240 --> 00:02:25,730 ambayo ni ya kwenda kuwa mtazamo katika Chuo Kikuu cha Harvard. 53 00:02:25,730 --> 00:02:28,100 Kwa wale ambao hawajawahi kuingia mguu hapa katika Cambridge, 54 00:02:28,100 --> 00:02:32,070 Massachusetts, sisi mawazo tunatarajia kuonyesha baadhi ya maeneo ya zaidi maalumu, 55 00:02:32,070 --> 00:02:35,190 kama vile baadhi ya maeneo ya kipekee ya CS50. 56 00:02:35,190 --> 00:02:36,810 Hebu tuangalie. 57 00:02:36,810 --> 00:02:39,740 >> Tupo hapa nje milango kuu ya Chuo Kikuu cha Harvard, na kwa njia hizi 58 00:02:39,740 --> 00:02:43,250 milango unaweza kuona John Harvard sanamu, ambayo ni zaidi folks ya kwanza 59 00:02:43,250 --> 00:02:44,180 marudio. 60 00:02:44,180 --> 00:02:45,430 Hebu kuingia ndani 61 00:02:45,430 --> 00:02:50,360 62 00:02:50,360 --> 00:02:53,470 Hivyo hii ni John Harvard sanamu, moja ya maeneo maarufu zaidi juu ya 63 00:02:53,470 --> 00:02:54,640 chuo kwa ajili ya watalii. 64 00:02:54,640 --> 00:02:59,170 Nini utaona hapa ni emblazoned na John Harvard, Mwanzilishi, 1638. 65 00:02:59,170 --> 00:03:01,730 >> Naam, zamu nje, kama wewe kuchukua ziara, moja ya mambo itabidi kujifunza ni kwamba 66 00:03:01,730 --> 00:03:03,030 kuna uongo tatu hapa. 67 00:03:03,030 --> 00:03:04,760 Moja, hii si John Harvard. 68 00:03:04,760 --> 00:03:09,380 Mbili, hakuwa mwanzilishi, na tatu, Harvard hakuwa ilianzishwa mwaka 1638. 69 00:03:09,380 --> 00:03:13,060 Lakini ni nini kweli ni kwamba kama wewe kusugua yake mguu hapa, unaweza tu kupata 70 00:03:13,060 --> 00:03:14,310 kidogo ya bahati. 71 00:03:14,310 --> 00:03:16,650 72 00:03:16,650 --> 00:03:19,960 >> Je, sisi kuangalia studio CS50 ya? 73 00:03:19,960 --> 00:03:23,450 Hivyo sisi ni hapa katika Maxwell Dworkin G-123. 74 00:03:23,450 --> 00:03:25,510 Maxwell Dworkin ya kompyuta yetu jengo sayansi. 75 00:03:25,510 --> 00:03:28,380 Kama Ningependa kuangalia hii juu ya Google Ramani, sisi ni saa 33 Oxford Street 76 00:03:28,380 --> 00:03:29,960 katika Cambridge, Massachusetts. 77 00:03:29,960 --> 00:03:33,210 Hivyo hapa, dhidi ya hali hii, ni ambapo sisi risasi kaptula CS50 ya, 78 00:03:33,210 --> 00:03:34,685 kutembea-throughs, na vifaa vingine. 79 00:03:34,685 --> 00:03:37,760 >> Nini utasikia kawaida kuona ni kwamba tutaweza kuja hapa, kurejea kwenye mengi ya 80 00:03:37,760 --> 00:03:42,180 taa haya, na masomo, Zamyla, Rob, na wengine, na 81 00:03:42,180 --> 00:03:44,420 yao hali ya juu hapa, dhidi ya hii kuongezeka nyeupe. 82 00:03:44,420 --> 00:03:47,040 Au kwa matumizi mengine, kama sisi kuacha hii kijani screen, tunaweza kweli 83 00:03:47,040 --> 00:03:49,720 digital kuweka katika nyuma yao kitu chochote tunataka - 84 00:03:49,720 --> 00:03:51,320 kompyuta screen, TV screen - 85 00:03:51,320 --> 00:03:52,560 kweli, kitu kama hicho. 86 00:03:52,560 --> 00:03:54,850 >> Naam, hapa, tuna baadhi ya taa kwamba sisi kutupa kwenye 87 00:03:54,850 --> 00:03:58,760 somo ili kupata nzuri, safi risasi dhidi yao na kuongezeka. 88 00:03:58,760 --> 00:04:01,700 Hapa tuna baadhi ya mabaki ya nini mara kwa mara nyingine CS50 mapumziko. 89 00:04:01,700 --> 00:04:03,460 Hivyo hii kutumika kuwa mahali ambapo sayansi ya kompyuta 90 00:04:03,460 --> 00:04:04,560 wanafunzi wa vyuo vikuu bila hutegemea nje. 91 00:04:04,560 --> 00:04:07,230 Tumekuwa tangu akageuka katika kitu zaidi high tech kwa ajili ya shina haya. 92 00:04:07,230 --> 00:04:09,840 >> Kwa kweli, hapa ni mabaki ya CS50 puzzle siku. 93 00:04:09,840 --> 00:04:13,330 Wakati wa mwanzo wa muhula, tuna baadhi ya wanafunzi 200-plus kupata pamoja 94 00:04:13,330 --> 00:04:16,190 na kutatua puzzles, ambayo ni maana ya kuwa demonstrative ya ukweli kwamba 95 00:04:16,190 --> 00:04:18,510 sayansi ya kompyuta kweli si kuhusu programu, per se. 96 00:04:18,510 --> 00:04:20,670 Ni zaidi kwa ujumla juu ya kutatua matatizo. 97 00:04:20,670 --> 00:04:23,610 >> Lakini hapa unaweza kuona kutoka yesteryear, baadhi ya alama kwamba tumekuwa kushoto 98 00:04:23,610 --> 00:04:25,140 milele juu ya hizi kuta kioo. 99 00:04:25,140 --> 00:04:27,650 Sasa kama sisi pivot kote, utaona mambo ni kama kutoka 100 00:04:27,650 --> 00:04:29,010 mtazamo kwa uzalishaji wa. 101 00:04:29,010 --> 00:04:30,250 Zaidi ya hapa, tuna tripod. 102 00:04:30,250 --> 00:04:34,170 Na juu ya tripod hii ni kweli tu kompyuta screen kwamba ni kuonyesha 103 00:04:34,170 --> 00:04:35,060 dhidi ya kioo. 104 00:04:35,060 --> 00:04:37,805 Hivyo kama sisi kweli akageuka kwenye kamera, akageuka juu kompyuta, 105 00:04:37,805 --> 00:04:40,780 ingekuwa kweli kuona maneno juu ya hili screen kwamba mimi au mmoja wa timu ya 106 00:04:40,780 --> 00:04:43,050 wanachama ni kweli kusoma juu ya kamera. 107 00:04:43,050 --> 00:04:46,730 >> Tunachofanya katika studio hii ni kweli tu scripted bidhaa kwa ajili ya CS50. 108 00:04:46,730 --> 00:04:49,330 Na sisi script ni pamoja na teleprompter, ili tuweze kupata inachukua tu 109 00:04:49,330 --> 00:04:52,820 haki, na ili wakati sisi kufanya makosa, ni rahisi sana kwa Rudia, 110 00:04:52,820 --> 00:04:57,010 Rudia, Rudia, na deterministically, wanasema kitu kimoja tena na tena. 111 00:04:57,010 --> 00:04:59,750 Sanders Theatre, wakati huo huo, ni mengi sana mbali cuff. 112 00:04:59,750 --> 00:05:01,790 Na ni zaidi mazingira hai ambapo tuna me na 113 00:05:01,790 --> 00:05:03,560 wanafunzi na wengine mazungumzo juu ya hatua. 114 00:05:03,560 --> 00:05:04,970 Basi kwa nini sisi kuchukua a kuangalia huko ijayo. 115 00:05:04,970 --> 00:05:11,330 116 00:05:11,330 --> 00:05:14,330 >> Hivyo sisi ni kuja hapa juu ya Memorial Hall, ambayo ni wapi ofisi CS50 ya 117 00:05:14,330 --> 00:05:16,100 masaa na mihadhara ni uliofanyika. 118 00:05:16,100 --> 00:05:18,080 Hapa katika mlango hii ni Annenberg Hall. 119 00:05:18,080 --> 00:05:20,940 Hii ni kweli ambapo wote wa Harvard ya freshmen kuchukua milo yao. 120 00:05:20,940 --> 00:05:23,890 Na ni pia ambapo wakati wa jioni, usiku moja au zaidi ya wiki, kwamba sisi 121 00:05:23,890 --> 00:05:26,960 kuwa na mamia ya CS50 wanafunzi kukusanya wakati mwingine kufanya kazi ya matatizo yao 122 00:05:26,960 --> 00:05:29,480 seti pamoja na kila mmoja, kama vizuri kama CS50 wafanyakazi. 123 00:05:29,480 --> 00:05:32,030 124 00:05:32,030 --> 00:05:33,760 >> Hivyo sisi ni hapa juu ya hatua ya Memorial Hall. 125 00:05:33,760 --> 00:05:36,330 Hizi ni milango kuu kwamba mapenzi kutuongoza Sanders Theatre, ambapo 126 00:05:36,330 --> 00:05:39,560 mihadhara ni uliofanyika. 127 00:05:39,560 --> 00:05:40,810 Itakuwa sisi? 128 00:05:40,810 --> 00:05:43,060 129 00:05:43,060 --> 00:05:46,920 >> Na hii ni Sanders Theatre, ambapo Mihadhara CS50 ya ni uliofanyika. 130 00:05:46,920 --> 00:05:48,170 Hii ni CS50. 131 00:05:48,170 --> 00:05:58,780 132 00:05:58,780 --> 00:06:00,870 Hivyo kuna msemo huu kwenda kuzunguka internet 133 00:06:00,870 --> 00:06:02,260 inajulikana kama, alikuwa mmoja Job. 134 00:06:02,260 --> 00:06:06,190 Na mimi kweli alikuwa mmoja Job kuhusu mbili dakika moja na nusu iliyopita, ambayo yangu 135 00:06:06,190 --> 00:06:09,710 wenzake hapa, Ramon, Colton, Dan, na Padrick, kwa haraka sana ilinikumbusha 136 00:06:09,710 --> 00:06:11,590 wa, kwa haraka kama sisi akaenda ziara hiyo. 137 00:06:11,590 --> 00:06:14,820 >> Kwa sababu kwa kweli, je, sisi walipaswa kuanza na hapa leo walikuwa wachache 138 00:06:14,820 --> 00:06:17,790 hellos kutoka kwa baadhi ya watangulizi yako darasani. 139 00:06:17,790 --> 00:06:20,760 Hivyo sisi ni kweli kwenda rewind kidogo, na kuleta William sasa, 140 00:06:20,760 --> 00:06:24,390 anayetoka Wales nchini Kingdom, ambaye alikuwa mmoja wa mdogo wetu 141 00:06:24,390 --> 00:06:29,102 wanafunzi wa mwaka wa mwisho, ambaye ingekuwa kama kusema hello. 142 00:06:29,102 --> 00:06:30,400 >> SPIKA 1: Je, jina lako? 143 00:06:30,400 --> 00:06:31,020 >> SPIKA 2: William. 144 00:06:31,020 --> 00:06:33,690 >> SPIKA 1: Nini hii? 145 00:06:33,690 --> 00:06:36,745 >> SPIKA 2: CS50. 146 00:06:36,745 --> 00:06:38,810 >> DAVID J. Malan: Basi hiyo kisha mara William. 147 00:06:38,810 --> 00:06:42,120 Hebu sasa kichwa mahali pengine, chini ya Nigeria, ambapo mwingine classmate ya 148 00:06:42,120 --> 00:06:44,280 yenu kwa kipindi cha miaka ni [? Annette,?] 149 00:06:44,280 --> 00:06:47,760 ambao vile vile kama kusema, Hello, dunia. 150 00:06:47,760 --> 00:06:50,190 >> SPIKA 3: Hello, dunia. 151 00:06:50,190 --> 00:06:53,840 Mimi kwa kweli msisimko kwa kuwa na kuchukua CS50 mwaka huu, kila 152 00:06:53,840 --> 00:06:56,160 njia ya kutoka Lagos, Nigeria. 153 00:06:56,160 --> 00:06:59,570 Nilihisi haja ya hone kompyuta yangu ujuzi, na nimekuwa siku zote alitaka 154 00:06:59,570 --> 00:07:02,830 kuwa programu nzuri, na hivyo Mimi saini kwa ajili bila shaka. 155 00:07:02,830 --> 00:07:06,860 Nataka kusema shukrani kwa Harvard na MIT na Shule waliokuwa wamekusanyika hapo kwa 156 00:07:06,860 --> 00:07:10,200 kufanya hili kutokea kwa maelfu ya watu duniani kote. 157 00:07:10,200 --> 00:07:12,740 >> Mimi tu kumaliza mchezo yangu ya kwanza milele. 158 00:07:12,740 --> 00:07:17,690 Got kufanyika kwa P-kuweka 0, Scratch yangu mpango, ambayo ni kura ya kujifurahisha. 159 00:07:17,690 --> 00:07:21,160 Natarajia kuwa na furaha zaidi kwa Bila shaka, na kwa wanafunzi wenzangu kama 160 00:07:21,160 --> 00:07:24,230 sisi kwenda kwa njia ya p kuweka baada ya p kuweka. 161 00:07:24,230 --> 00:07:24,840 Jina langu ni [? Annette?] 162 00:07:24,840 --> 00:07:28,872 [? Onoja?], Na hii ni CS50. 163 00:07:28,872 --> 00:07:31,880 >> DAVID J. Malan: Sasa, hasa kama wewe ni wasiwasi kwamba wewe ni mkubwa 164 00:07:31,880 --> 00:07:34,040 mwanafunzi katika darasa, wengine uhakika kwamba wewe si. 165 00:07:34,040 --> 00:07:39,270 CS50 na CS50x ina kabisa gamut ya umri kutoka kama vijana kama umri wa miaka 10 kwa 166 00:07:39,270 --> 00:07:40,960 mengi, wakubwa zaidi ya hiyo. 167 00:07:40,960 --> 00:07:43,680 Kwa kweli, idadi ya wanafunzi wako ambao wamekuwa posting juu ya matangazo 168 00:07:43,680 --> 00:07:45,790 bodi wamekuwa kushirikiana videos na athari hiyo. 169 00:07:45,790 --> 00:07:48,140 Na tunatarajia kushiriki moja katika hasa kutoka mwaka jana - 170 00:07:48,140 --> 00:07:48,830 [? Alecio?] 171 00:07:48,830 --> 00:07:51,680 kutoka Brazil, ambaye pia ingekuwa kama kusema hello yake 172 00:07:51,680 --> 00:07:54,870 warithi wa darasa. 173 00:07:54,870 --> 00:07:56,790 >> SPIKA 4: Hello, dunia. 174 00:07:56,790 --> 00:07:57,700 Mimi nina [? Alecio?] 175 00:07:57,700 --> 00:07:58,390 [? Omida?] 176 00:07:58,390 --> 00:08:00,430 kutoka Brasilia, Brazil. 177 00:08:00,430 --> 00:08:07,050 Mimi nina umri wa miaka 78, na mimi nina sana shauku kuhusu kozi hii online. 178 00:08:07,050 --> 00:08:12,270 Mimi nina uhakika itakuwa kunisaidia kura kufanya kazi yangu katika eneo la 179 00:08:12,270 --> 00:08:14,180 mbali kujifunza. 180 00:08:14,180 --> 00:08:19,350 Mimi kuchukua fursa hii kuwashukuru EDX kwa mpango wa kozi kama 181 00:08:19,350 --> 00:08:25,870 hii, na pia kuwashukuru Profesa Malan na wote CS50 kundi. 182 00:08:25,870 --> 00:08:26,930 Jina langu ni [? Alecio?] 183 00:08:26,930 --> 00:08:29,795 [? Omida?], Na hii ni CS50. 184 00:08:29,795 --> 00:08:32,408 185 00:08:32,408 --> 00:08:35,159 >> DAVID J. Malan: Basi sasa sisi itakuwa kukata kwa ziara ya Harvard 186 00:08:35,159 --> 00:08:37,559 University, kwa wale ambao hawajaona Harvard kabla ya. 187 00:08:37,559 --> 00:08:40,789 Lakini kitu anasema mimi una sasa kuonekana Chuo Kikuu cha Harvard kabla ya. 188 00:08:40,789 --> 00:08:43,720 Hivyo sisi ni kwenda kusonga mbele kwa sehemu inayojulikana kama Inbox yetu. 189 00:08:43,720 --> 00:08:46,410 Katika kipindi cha wiki chache, wameweza kweli wamekuwa kuwasilisha maswali machache kabisa, 190 00:08:46,410 --> 00:08:47,910 ambayo tumekuwa kuweka jicho nje. 191 00:08:47,910 --> 00:08:51,470 >> Na baadhi yenu mlikuwa watu wa aina ya kutosha kuuliza wale maswali hayo kupitia video. 192 00:08:51,470 --> 00:08:54,850 Kwa kweli, hapa katika Kuwait, sisi na Dhruv, ambao wangependa pose 193 00:08:54,850 --> 00:08:59,490 swali kwa sisi, wafanyakazi, kuhusu CS50 na kuhusu sayansi ya kompyuta na 194 00:08:59,490 --> 00:09:00,670 programu zaidi kwa ujumla. 195 00:09:00,670 --> 00:09:01,730 Dhruv? 196 00:09:01,730 --> 00:09:02,390 >> Dhruv RAMANI: Hi. 197 00:09:02,390 --> 00:09:04,853 Mimi nina Dhruv, na mimi kuishi katika Kuwait, Mashariki ya Kati. 198 00:09:04,853 --> 00:09:06,302 Mimi nina mwanafunzi [? katika darasa 10,?] 199 00:09:06,302 --> 00:09:07,560 na mimi tumefanya lugha nne kwa sasa. 200 00:09:07,560 --> 00:09:12,060 Mimi wamechukua CS50 mwaka 2013, na kwanza swali kwamba alikuja kwa mawazo yangu ni 201 00:09:12,060 --> 00:09:14,488 ambayo ni lugha bora ya kujifunza katika dunia ya leo? 202 00:09:14,488 --> 00:09:17,866 203 00:09:17,866 --> 00:09:19,880 >> DAVID J. Malan: Basi hiyo ni swali kubwa. 204 00:09:19,880 --> 00:09:21,940 Na huko kwa kweli si jibu moja yake. 205 00:09:21,940 --> 00:09:24,990 Kuna kweli si lugha nzuri, lakini badala kuna lugha bora 206 00:09:24,990 --> 00:09:26,220 wakati mwingine kwa ajili ya kazi. 207 00:09:26,220 --> 00:09:28,120 Lakini hata hivyo, mara nyingi na busara. 208 00:09:28,120 --> 00:09:31,180 Kwa mfano, picha hapa ni kabisa chache ya lugha maarufu 209 00:09:31,180 --> 00:09:35,200 leo, na C ni moja tu ya yao kati ya yao, kama ni PHP wengine na kwamba tutaweza 210 00:09:35,200 --> 00:09:38,140 kuchunguza baadaye katika muhula, katika CS50 yenyewe. 211 00:09:38,140 --> 00:09:41,720 >> Sasa, sana katika Vogue siku hizi ni lugha kama chatu na Ruby na 212 00:09:41,720 --> 00:09:46,000 Perl, na hata Java kwa kiasi fulani kwa programu mtandao msingi, ambapo Java katika 213 00:09:46,000 --> 00:09:48,380 hasa hutumika kabisa kidogo kwa ajili ya programu ya biashara, 214 00:09:48,380 --> 00:09:49,880 yaliyotolewa na makampuni makubwa. 215 00:09:49,880 --> 00:09:52,545 C ni ya kawaida kabisa katika ngazi ya chini iliyoingia mifumo. 216 00:09:52,545 --> 00:09:56,120 Lakini sisi kweli huwa na kutumia C kwa sababu ni lugha haki ndogo, juu 217 00:09:56,120 --> 00:09:58,550 ambayo mengi ya waandamizi wake zimejengwa. 218 00:09:58,550 --> 00:10:01,890 >> Hivyo kama wewe ni wanashangaa ambayo lugha unapaswa kutumia kwa kazi fulani, 219 00:10:01,890 --> 00:10:03,080 vizuri, ni kweli inategemea. 220 00:10:03,080 --> 00:10:06,900 Na mara nyingi kabisa, programu ya mwenyewe upendeleo wa binafsi kupima in 221 00:10:06,900 --> 00:10:09,590 Hivi sasa, kwa mfano, mimi nina kwenda kwa njia ya awamu ambapo mimi kwa kweli kama 222 00:10:09,590 --> 00:10:10,270 JavaScript. 223 00:10:10,270 --> 00:10:12,970 Si sana katika browser, lakini kweli upande wa server. 224 00:10:12,970 --> 00:10:16,960 Unaweza kweli kutumia ni pamoja na mfumo aitwaye Node.js mpango 225 00:10:16,960 --> 00:10:18,580 mstari amri katika server. 226 00:10:18,580 --> 00:10:22,035 >> Sasa katika ulimwengu wa kweli, kiasi kama wewe inaweza, kwa mfano, kujaribu kupata 227 00:10:22,035 --> 00:10:24,880 screw kama hii katika ukuta kutumia zaidi chombo yoyote - kwa mfano, hata 228 00:10:24,880 --> 00:10:26,550 zaidi nzito mitupu ya nyundo. 229 00:10:26,550 --> 00:10:30,080 Hii bila ya shaka kazi kama wewe hit heck nje ya kitu ndani ya ukuta. 230 00:10:30,080 --> 00:10:31,880 Lakini unaweza kuwa ni kidogo kisasa zaidi. 231 00:10:31,880 --> 00:10:34,720 Na unaweza kufikia kwa badala yake, kitu kama bisibisi Flathead. 232 00:10:34,720 --> 00:10:38,300 Kwa sababu kama wewe kupata haki tu, kwamba utaendana katika crosshairs ya kwamba 233 00:10:38,300 --> 00:10:40,630 screw, na unaweza pengine kupata ndani ya ukuta. 234 00:10:40,630 --> 00:10:43,880 >> Lakini chombo bora kwa ajili ya kazi, au moja sahihi zaidi kwa hii 235 00:10:43,880 --> 00:10:47,820 maombi maalum, hivyo kusema, itakuwa Phillips kichwa bisibisi, 236 00:10:47,820 --> 00:10:52,140 ambapo mkuu wa bisibisi inafaa kikamilifu katika kichwa cha screw. 237 00:10:52,140 --> 00:10:54,190 Hivyo wakati wa kuchagua programu lugha, ni sawa 238 00:10:54,190 --> 00:10:54,880 katika roho hiyo. 239 00:10:54,880 --> 00:10:58,380 Na unaweza kutumia lugha mbalimbali kutatua kazi hiyo, lakini baadhi ya 240 00:10:58,380 --> 00:11:00,390 wao wanaweza mavuno zaidi ufumbuzi kifahari. 241 00:11:00,390 --> 00:11:02,380 >> Baadhi yao huenda mavuno kasi ufumbuzi. 242 00:11:02,380 --> 00:11:05,500 Na arguably, baadhi yao huenda kweli mavuno ufumbuzi bora. 243 00:11:05,500 --> 00:11:08,830 Basi mmoja wa takeaways, hopefully, utapata nje ya CS50 ni wakati wa kutumia 244 00:11:08,830 --> 00:11:11,370 zana maalum kwa ajili ya kazi fulani. 245 00:11:11,370 --> 00:11:14,130 >> Vizuri, karibu up, hebu tuangalie swali jingine kwamba iliwasilishwa na 246 00:11:14,130 --> 00:11:17,610 moja ya wanafunzi wako, wakati huu kutoka Bernardo kutoka Brazil. 247 00:11:17,610 --> 00:11:23,844 248 00:11:23,844 --> 00:11:24,980 >> BERNARDO: Hey. 249 00:11:24,980 --> 00:11:26,090 Jina langu ni Bernardo. 250 00:11:26,090 --> 00:11:27,170 I am kutoka Brazil. 251 00:11:27,170 --> 00:11:29,076 Na ningependa kuuliza mambo mawili. 252 00:11:29,076 --> 00:11:34,130 Kwanza wao, jinsi ya kufunga ni biashara ya kasi Harvard, na pili, 253 00:11:34,130 --> 00:11:35,915 ambaye alikuwa na wazo ya kufanya appliance? 254 00:11:35,915 --> 00:11:39,424 255 00:11:39,424 --> 00:11:41,150 >> DAVID J. Malan: Basi hiyo pia swali kubwa. 256 00:11:41,150 --> 00:11:43,130 Na sisi kweli hakujua jibu la kwamba. 257 00:11:43,130 --> 00:11:46,220 Hivyo jana usiku, mimi kuwaaga email kwa baadhi ya marafiki katika mitandao ya Harvard ya 258 00:11:46,220 --> 00:11:48,770 kikundi, na vinavyotokana hasa Swali Bernardo ya. 259 00:11:48,770 --> 00:11:50,770 Naam, ni zamu nje - ngoma roll - 260 00:11:50,770 --> 00:11:55,370 kwamba Harvard mtandao wa kuunganishwa na dunia ya nje ni 10 gigabits. 261 00:11:55,370 --> 00:12:00,360 Kuweka kwamba katika mtazamo, kwamba Bits bilioni 10 kwa pili. 262 00:12:00,360 --> 00:12:03,290 >> Sasa kuweka kwamba katika mtazamo, kama ungekuwa na kushusha movie kutoka 263 00:12:03,290 --> 00:12:06,060 kitu kama iTunes au mahali pengine online siku hizi, wapate kwa kweli 264 00:12:06,060 --> 00:12:07,970 kuwa kweli kubwa kama ni HD video. 265 00:12:07,970 --> 00:12:10,390 Hiyo inaweza kuwa gigabytes mbili katika jumla. 266 00:12:10,390 --> 00:12:14,690 Naam, kama Bandwidth yako ni 10 gigabits kwa pili, unaweza kushusha movie 267 00:12:14,690 --> 00:12:19,060 kama kwamba katika sekunde tu, badala ya dakika au masaa inachukua zaidi ya 268 00:12:19,060 --> 00:12:20,070 sisi nyumbani. 269 00:12:20,070 --> 00:12:23,470 >> Sasa katika haki, si kila mmoja sisi hapa juu ya chuo wanapata 270 00:12:23,470 --> 00:12:25,880 Bits bilioni 10 ya Bandwidth kwa pili. 271 00:12:25,880 --> 00:12:28,570 Katika hali halisi, ni pamoja katika watu wachache kabisa. 272 00:12:28,570 --> 00:12:32,270 Lakini kwa kweli, kwa nini sio sisi kuangalia kasi ya mtihani, ambapo tutaweza kufanya 273 00:12:32,270 --> 00:12:35,530 mtihani kwamba vipimo tu jinsi ya kufunga baadhi bits wanaweza kusafiri kwa hasa yangu 274 00:12:35,530 --> 00:12:37,810 mbali kwa baadhi ya wengine eneo jirani. 275 00:12:37,810 --> 00:12:39,520 >> Hiyo siyo lazima mamlaka 276 00:12:39,520 --> 00:12:41,190 kujibu kama kwa Bandwidth. 277 00:12:41,190 --> 00:12:44,530 Kwa kweli, kama unaweza kujaribu kufanya hili nyumbani, wewe wanaweza kupata kwamba internet huduma yako 278 00:12:44,530 --> 00:12:49,170 mtoa huduma, au ISP, ni aina ya kupotosha wewe, ambapo mengi ya ISPs 279 00:12:49,170 --> 00:12:51,230 siku hizi kuruhusu kupasuka kasi. 280 00:12:51,230 --> 00:12:54,700 Na kwa kupasuka, I mean kwa mara ya kwanza chache sekunde ya kushusha kitu au 281 00:12:54,700 --> 00:12:57,790 kufanya kitu chochote kwa mtandao wako uhusiano, huenda kweli kushusha 282 00:12:57,790 --> 00:12:58,685 kabisa kufunga. 283 00:12:58,685 --> 00:13:02,170 Lakini kama wewe kuangalia bar maendeleo - kasi ambayo bits yako ni kuwa 284 00:13:02,170 --> 00:13:02,880 kupakuliwa - 285 00:13:02,880 --> 00:13:06,630 utasikia mara kwa mara kuona kwamba ni kupunguza chini na chini na chini. 286 00:13:06,630 --> 00:13:09,800 >> Hivyo majaribio haya kasi, kusema ukweli, ni si lazima mwakilishi. 287 00:13:09,800 --> 00:13:13,980 Lakini kwa downloads short, itabidi kweli kupata bits hii nyingi chini ya kwa pili. 288 00:13:13,980 --> 00:13:15,230 Dan, tuseme kukimbia mtihani kasi? 289 00:13:15,230 --> 00:13:31,060 290 00:13:31,060 --> 00:13:32,310 Kuja juu. 291 00:13:32,310 --> 00:13:35,160 292 00:13:35,160 --> 00:13:37,320 Kuna shusha kasi yetu ni na sasa upload kasi yetu. 293 00:13:37,320 --> 00:13:39,470 Kuja juu, kuja juu. 294 00:13:39,470 --> 00:13:41,320 Haya! 295 00:13:41,320 --> 00:13:42,570 Haya! 296 00:13:42,570 --> 00:13:44,810 297 00:13:44,810 --> 00:13:46,130 Sana, mimi nina kuambiwa. 298 00:13:46,130 --> 00:13:46,660 >> Sawa. 299 00:13:46,660 --> 00:13:50,340 Ili kwamba ilikuwa katika studio hii hapa, Hauser Studio, katika WIDENER maktaba ya 300 00:13:50,340 --> 00:13:51,500 Chuo Kikuu cha Harvard. 301 00:13:51,500 --> 00:13:53,810 kasi kwamba mbali mdogo wangu ni kupata, kwa njia ya 302 00:13:53,810 --> 00:13:55,580 Harvard ya utlandet mtandao. 303 00:13:55,580 --> 00:13:58,760 Sasa mwisho, tuna swali kutoka tatu ya wanafunzi wako - 304 00:13:58,760 --> 00:14:05,206 Mauricio kutoka Peru, ambao wangependa kusababisha maswali yafuatayo kutoka hapa. 305 00:14:05,206 --> 00:14:06,480 >> Mauricio RADA: Hello. 306 00:14:06,480 --> 00:14:08,750 Jina langu ni Mauricio, na mimi nina kutoka Peru. 307 00:14:08,750 --> 00:14:13,560 Swali langu ni, mimi kuruhusiwa kuanza [Inaudible] kufundisha CS50 kwa ajili yetu 308 00:14:13,560 --> 00:14:15,890 Shule kutumia vifaa CS50? 309 00:14:15,890 --> 00:14:17,300 [Inaudible]. 310 00:14:17,300 --> 00:14:20,842 Jina langu ni Mauricio, na hii ni CS50. 311 00:14:20,842 --> 00:14:22,770 >> DAVID J. Malan: [inaudible] 312 00:14:22,770 --> 00:14:25,550 Mauricio, na mtu mwingine kwamba nia ya swali hili hasa 313 00:14:25,550 --> 00:14:28,380 kujua kwamba jibu ni kabisa, kwa moyo wote ndiyo. 314 00:14:28,380 --> 00:14:31,960 Kwa kweli, mwanafunzi hapa juu ya chuo jina lake Gabriel [? Grimardes?] 315 00:14:31,960 --> 00:14:35,910 anayetoka Brazil kwa kweli hasa kwamba katika mji wake na 316 00:14:35,910 --> 00:14:42,410 Bila shaka yeye jina la CC50, inapatikana hapa katika CC50.com.br, wale ambao wanazungumza 317 00:14:42,410 --> 00:14:43,930 Ureno, kama Ningependa kuangalia. 318 00:14:43,930 --> 00:14:47,020 >> Na nini Gabriel alifanya miaka michache iliyopita alikuwa literally kupakuliwa yote ya 319 00:14:47,020 --> 00:14:50,520 Takrima CS50 na mitihani na seti tatizo na video. 320 00:14:50,520 --> 00:14:53,230 Na yeye kutafsiriwa wengi kwamba yaliyomo yake. 321 00:14:53,230 --> 00:14:56,510 Na kisha, kwa msaada baba yake katika nyuma ya darasa katika high wake 322 00:14:56,510 --> 00:15:01,030 shule, yeye mwenyewe kuanza kufundisha yake mwenyewe toleo la CS50, wa kwanza 50 323 00:15:01,030 --> 00:15:02,440 ya wanafunzi wake katika shule ya sekondari. 324 00:15:02,440 --> 00:15:05,670 Kisha muhula baadae, baadhi 150 za wanafunzi wake. 325 00:15:05,670 --> 00:15:08,190 >> Na ni kabisa, kabisa msukumo kumwona. 326 00:15:08,190 --> 00:15:11,540 Hivyo kama huna kwenda URL hii baada ya hii matangazo, bonyeza video YouTube 327 00:15:11,540 --> 00:15:12,250 hiyo iliyoingia huko. 328 00:15:12,250 --> 00:15:15,500 Na unaweza kuona Gabriel kufundisha pretty sana vifaa hivyo kwamba sisi 329 00:15:15,500 --> 00:15:17,970 kufundishwa mwaka huo katika CS50 juu ya chuo. 330 00:15:17,970 --> 00:15:21,240 Na mimi nina hivyo radhi kwa kusema kwamba hiyo Gabriel, zamani shule ya sekondari 331 00:15:21,240 --> 00:15:24,330 mwanafunzi kutoka Brazil, ni sasa hapa juu ya Chuo kama Harvard Harvard ya 332 00:15:24,330 --> 00:15:28,450 Freshman, na mwaka ujao itakuwa CS50 ya mafundisho kichwa wenzake, na kila 333 00:15:28,450 --> 00:15:31,120 zaidi kushiriki katika CS50 yanayoendelea. 334 00:15:31,120 --> 00:15:34,100 >> Hivyo kama wewe mwenyewe angependa kufanya hivyo kama Mauricio, tafadhali tu kwenda 335 00:15:34,100 --> 00:15:37,930 CS50.tv, ambayo ni kozi mwenyewe OpenCourseWare tovuti. 336 00:15:37,930 --> 00:15:41,060 Kuna leseni pale kwamba unaweza kusoma, na ni kweli kitu 337 00:15:41,060 --> 00:15:44,140 aitwaye leseni ya Creative Commons, ambayo pretty much anasema kwamba ni 338 00:15:44,140 --> 00:15:48,280 bure na kuwakaribisha kwa kutumia nyenzo, kwa kurekebisha vifaa, muda mrefu kama wewe 339 00:15:48,280 --> 00:15:50,990 mwenyewe kushiriki sawa na wengine. 340 00:15:50,990 --> 00:15:52,620 >> Hivyo hiyo ni kwa Inbox ya wiki hii. 341 00:15:52,620 --> 00:15:55,910 Mbona sisi kuchukua mapumziko mafupi hapa, na kuruhusu nafasi ya kuangalia 60 342 00:15:55,910 --> 00:15:57,488 sekunde ya kittens. 343 00:15:57,488 --> 00:16:58,865 344 00:16:58,865 --> 00:17:01,860 >> DAVID J. Malan: [inaudible] 345 00:17:01,860 --> 00:17:05,720 wanaishi, na nini sisi mawazo tunatarajia kufanya ni kuhitimisha leo kutoka katika filamu kuwa moja ya 346 00:17:05,720 --> 00:17:08,760 Wanachama CS50 ya mwenyewe wafanyakazi, T.J. Kinyozi, ameweka pamoja. 347 00:17:08,760 --> 00:17:14,730 Kama pengine kujua, CS50 hapa juu ya chuo unafikia upeo na CS50 haki, 348 00:17:14,730 --> 00:17:16,730 Epic kuonyesha ya wanafunzi ' miradi ya mwisho. 349 00:17:16,730 --> 00:17:19,757 Wale wa wewe kuchukua CS50 kupitia Harvard Ugani Shule online, au 350 00:17:19,757 --> 00:17:23,119 kupitia EDX online itakuwa na sawa nafasi, angalau virtual na 351 00:17:23,119 --> 00:17:27,010 online, kwa kuonyesha mradi wako wa mwisho baadhi ya idadi ya miezi hivyo kwa ajili ya 352 00:17:27,010 --> 00:17:28,480 dunia nzima kuona. 353 00:17:28,480 --> 00:17:31,530 >> Lakini sisi mawazo tunatarajia kukupa hisia hapa, pamoja na baadhi ya kuongezeka kwa furaha juu yetu 354 00:17:31,530 --> 00:17:35,880 kuonyesha kubwa screen, ya nini hasa kilichotokea tu wiki chache zilizopita hapa juu ya 355 00:17:35,880 --> 00:17:39,670 chuo na juu-ya chuo toleo la haki CS50 ya. 356 00:17:39,670 --> 00:17:40,920 Hebu unaendelea. 357 00:17:40,920 --> 00:17:43,234 358 00:17:43,234 --> 00:18:17,370 >> [Music kucheza] 359 00:18:17,370 --> 00:18:21,354 >> SPIKA 5: Hi, [? Mimi nina Allison?] hapa katika CS50 haki, na - 360 00:18:21,354 --> 00:18:22,350 >> SPIKA 6: [? Curt Stone. ?] 361 00:18:22,350 --> 00:18:22,848 >> [? SPIKA 5: Curt Stone. ?] 362 00:18:22,848 --> 00:18:23,860 Kubwa kuona wewe. 363 00:18:23,860 --> 00:18:26,159 Kwa hiyo, unaweza kutuambia kidogo kidogo kuhusu mradi wako? 364 00:18:26,159 --> 00:18:27,638 >> SPIKA 6: Oh, vizuri kabisa. 365 00:18:27,638 --> 00:18:29,117 >> SPIKA 7: Sisi alifanya muziki visualizer. 366 00:18:29,117 --> 00:18:34,047 367 00:18:34,047 --> 00:18:35,297 >> SPIKA 8: [inaudible]. 368 00:18:35,297 --> 00:18:39,963 369 00:18:39,963 --> 00:18:42,428 >> SPIKA 9: Kwa hiyo wala sisi alikuwa uzoefu wowote [inaudible]. 370 00:18:42,428 --> 00:18:43,414 >> SPIKA 10: Hiyo ni ya kutisha. 371 00:18:43,414 --> 00:18:45,170 Same kama 70% ya wanafunzi wengine. 372 00:18:45,170 --> 00:18:47,292 >> SPIKA 11: Mimi nilikuwa mmoja wa 70% ya watu ambao hawakuwa 373 00:18:47,292 --> 00:18:47,930 kujua chochote kuhusu - 374 00:18:47,930 --> 00:18:49,364 >> SPIKA 5: Na sasa uko kama [inaudible]. 375 00:18:49,364 --> 00:18:55,100 376 00:18:55,100 --> 00:18:57,682 >> SPIKA 12: Ni nafasi ya ajabu kuleta wanafunzi pamoja 377 00:18:57,682 --> 00:18:59,566 na kuona nini kinatokea. 378 00:18:59,566 --> 00:19:03,050 Tuangalie baadhi ya programu 600-isiyo ya kawaida kuwa alionyesha hapa ambayo haikuwepo 379 00:19:03,050 --> 00:19:05,526 kabla ya sababu ya moja kuingia ngazi Bila shaka ajabu. 380 00:19:05,526 --> 00:19:45,331 381 00:19:45,331 --> 00:19:49,380 >> SPIKA 13: Wao kwa kweli kuhudumia yako uzoefu kuja katika darasa. 382 00:19:49,380 --> 00:19:54,520 Kama mimi, nilikuwa zero, zero kompyuta ujuzi wa programu. 383 00:19:54,520 --> 00:19:57,395 Nilijua nini Java alikuwa, hivyo kwamba alikuwa juu yake. 384 00:19:57,395 --> 00:19:58,650 Kweli, kwa kweli kufanya. 385 00:19:58,650 --> 00:20:00,580 Na hasa - na TFS, ajabu. 386 00:20:00,580 --> 00:20:05,260 TFS ni ya ajabu, ajabu sehemu kwa kozi hii. 387 00:20:05,260 --> 00:20:06,510 Hii ilikuwa CS50. 388 00:20:06,510 --> 00:20:16,915 389 00:20:16,915 --> 00:20:19,200 >> SPIKA 14: Mamia ya miradi kutembea kwa njia ya ukumbi huu. 390 00:20:19,200 --> 00:20:23,710 Mamia ya masanduku ya pipi, mamia ya masanduku ya popcorn, na wachache kabisa 391 00:20:23,710 --> 00:20:26,580 waliohudhuria, na wote tu ya mipira dhiki ambayo yamekuwa 392 00:20:26,580 --> 00:20:28,085 kutupwa na kuchukuliwa nyumbani. 393 00:20:28,085 --> 00:20:32,233 Hii imekuwa CS50, na hii imekuwa CS50 kubeba. 394 00:20:32,233 --> 00:20:33,925 Usiku mwema. 395 00:20:33,925 --> 00:20:37,220 >> DAVID J. Malan: Hiyo, basi, ni nini wenu hapa katika CS50. 396 00:20:37,220 --> 00:20:38,790 Hiyo ni kwa CS50 kuishi. 397 00:20:38,790 --> 00:20:41,780 Asante sana kwa Ramon, Padrick, Colton, na Dan, ambaye ni hapa nyuma ya 398 00:20:41,780 --> 00:20:42,440 kuonyesha. 399 00:20:42,440 --> 00:20:45,800 Na wala kushika jicho nje ya Twitter, Facebook, Reddit, na mahali pengine kwa 400 00:20:45,800 --> 00:20:48,660 matangazo kupitia ambayo wewe mwenyewe Unaweza kuwasilisha video na maswali 401 00:20:48,660 --> 00:20:52,120 kwamba unaweza kujiunga na sisi hapa katika studio kwa CS50 ijayo kuishi. 402 00:20:52,120 --> 00:20:53,370 Hii ilikuwa CS50. 403 00:20:53,370 --> 00:21:20,448