CS50x 2023 - Lecture 0 - Scratch

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This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming.

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TABLE OF CONTENTS

00:00:00 - Introduction
00:01:12 - This is CS50
00:16:19 - Binary
00:32:23 - Representation
00:56:08 - Algorithms
01:08:30 - Abstraction
01:10:06 - Scratch
01:16:13 - Hello, world
01:27:19 - Text to speech
01:28:57 - Loops
01:32:07 - Custom blocks, Functions
01:37:38 - Conditionals
01:42:20 - Whack-a-mole
01:45:01 - Oscartime
02:00:17 - Ivy's Hardest Game

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HOW TO SUBSCRIBE

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HOW TO JOIN CS50 COMMUNITIES

HOW TO FOLLOW DAVID J. MALAN

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CS50 SHOP

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LICENSE

CC BY-NC-SA 4.0
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License

David J. Malan

[freguenshoodjean]

I now understand why these universities are among the best in the world, the teachers put you in an atmosphere so that you understand everything and they explain very well.

[josh_harrison]

I started with CS50 a couple years ago after getting a degree in mechanical engineering. Now I’m a software engineer. Thank you David and team.

[guitarsz]

That teacher should have gotten a round of applause. He's incredible.

[askdanixa]

I always wanted to attend Harvard.... so here I am at 58, such a fun class! ❤

[PawanKumar-jkyy]

Lucky to be in this era, this is how things are to be taught, i am lucky that i can access this valuable information from the other side of the globe ! Thank you sir David and team to making it interactive, looking forward for more lectures !

[NtecPhones]

The Best Introduction to Computer Science

[bigolomofe]

I've tried to finish this course for years now. Never get past Lecture 0. I will this time. Prof. David Malan is a G.O.A.T. Like fine wine he's only gotten better with time. Edit: Love how he rips the Yellow Pages every year.

[killuminatiGame]

am a Harvard student in Europe in my room lol 😁

[taro]

I find it amazing and amusing that he can talk so much quickly relying on memory alone.

[guitarman]

New month, new course. Despite studying computer science at university in yesteryear, this course is a great refresher. I also really love David's energy. Very engaging. A shame that none of my lecturers used to be like him.

[andreicristian]

I'm impressed how fast he can put his thoughts together and how fluent he is for such a long time.

[hoangthihongphuong]

1:18:16 Functions
1:18:33 Conditional
1:18:51 Boolean expressions
1:19:28 Loops
1:20:19 Important quote 1

[yammymoo]

A software engineer with no "formal" training....I needed David a few years ago...learning more from this video than I have in years...THANK YOU - THANK YOU - THANK YOU

[hzgaming]

I am 13 and this is incredibly simple and understandable. great job!

[KGcitiZen]

Speaking for 3 hours straight with such a speed and I didn't even yawn, magnificent!

[Glitch_]

i am only 9 years old, but I am really interested, you are a really good teacher, thanks for teaching me.

[ismaliatrajber]

Nice synchronicity with the mechanic- The class was amazing, thank you, David.

[codenamegrant]

David's passion and enthusiasm is addictive. I took this course a couple years ago and this video came across my feed, and now im just watching it cause he is so engaging.

[guitarsz]

What an INCREDIBLE teacher. With a teacher like that you can learn anything...such enthusiasm and masterful delivery of the content. Super psyched to have access to this.

[chidikevincent]

After several days on the internet searching for a course on programming for absolute beginners like me, this is where my programming journey begins. Thank you to everyone involved with CS50.