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SPEAKER 1: Hello, world, and hello to
all of CS50's teachers, now students,

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in Indonesia.

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My name is David Malan
and I teach CS50 here

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at Harvard University, which
is Harvard's Introduction

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to the intellectual
enterprises of computer science

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and the art of programming.

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We're so glad that you've
joined us on this adventure.

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And, indeed, in the
coming weeks, not only

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will you learn how to
take computer science,

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but also how to teach it as well.

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We'll start off in week zero,
the course's first week,

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taking a look at Scratch, a graphical
programming language from our friends

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down the road at MIT, via which you'll
program by dragging and dropping

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puzzle pieces that will
only interlock together

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if it makes logical sense to do so.

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We use Scratch so as to establish a
norm from the beginning of the semester

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that programming is
creative, it's fun, it

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can come to life on the student
screen, even when it's not necessarily

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the more traditional black and white
programming language, so to speak,

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used at your own keyboard.

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With that said, in the
course's next week, a.k.a.

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week one, we will tackle exactly
that kind of traditional language

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in the form of C, an older
language via which you'll

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program using your keyboard entirely.

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But via C and the weeks
that follow will you

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have a better understanding underneath
the hood of how it all works.

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Looking at topics involving memory
management and security, and so

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much more, you'll learn
to use a computer's memory

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as a Canvas of sorts via which
to not only store data, but also

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bring your own ideas to life.

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Toward the end of the
semester and course

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itself, we'll introduce you to
Python, a more modern programming

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language via which you'll program
all the more easily because someone

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else will have implemented
for you underneath the hood so

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many of those primitives
that we'll explore and see.

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We'll introduce you as well to
SQL, a database language via which

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you can store and query data at scale.

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We'll introduce you to a
little bit of HTML and CSS

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and JavaScript, languages
that are specifically

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used nowadays for the web and
mobile applications alike.

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And with that
conglomeration of languages,

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ultimately, will you be able to create
your very own final project, as well

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shortly thereafter, your
own students as well,

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and bring to life their
ideas, their creativity,

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all thanks to having learned
how to program itself.

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All this and more in the months ahead.

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This is and welcome to CS50.

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