CS50 2019 - Lecture 0 - Computational Thinking, Scratch

TABLE OF CONTENTS

00:00:00 - Introduction
00:02:35 - Representation
00:06:02 - Binary
00:09:17 - Binary Bulbs (Demo)
00:12:22 - Representing Letters
00:14:08 - Abstraction
00:15:35 - Unicode
00:17:21 - RGB
00:19:38 - Representing Images and Video
00:21:28 - Finding Mike Smith
00:24:54 - Solving Problems Effectively
00:28:20 - Pseudocode
00:31:18 - Scratch
00:33:16 - The Scratch Editor
00:39:58 - meow
00:42:22 - count0
00:43:42 - pet0
00:44:42 - pet1
00:45:25 - bounce0
00:48:15 - bounce1
00:48:49 - bark
00:50:38 - marco
00:52:19 - cough
00:54:03 - Custom Blocks
00:56:09 - Oscartime
00:58:21 - Ivy's Hardest Game

TOPICS

* Problem solving
* Inputs, Outputs
* Representation
* Unary, Binary, Decimal
* Abstraction
* ASCII, Unicode
* RGB
* Algorithms
* Running Time
* Pseudocode
* Scratch
* Functions, Arguments, Return Values
* Variables
* Boolean Expressions, Conditions
* Loops
* Events
* Threads

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This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming. Demanding, but definitely doable. Social, but educational. A focused topic, but broadly applicable skills. CS50 is the quintessential Harvard course.

FALL 2019

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HOW TO SUBSCRIBE

HOW TO TAKE CS50

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

[Mr.Coffee]

"There are 10 types of people in this world, those who understand binary and those who don't".
I finally understand what that joke means.

[ShinobiEngineer]

The most energetic computer science lecture ever... with sweat and all!!! 🤓👍

[talhaanik]

I have never seen this much energy in any of my teachers in my whole life.

[brak_]

Jesus Christ, I've studied at the best computer science college in Romania and none of my taechers even ever came close to this level, we NEED more teachers like this, teachers that literally make you pause gaming and start studying.

[harshdeepdwivedi]

Imagine a teacher using a piano in the class just for the sake of an example, that's pure dedication

[AmandeepSingh-kmht]

So this is what studying in a top university of the world feels like.

[JOSHOCEANS]

I never thought I would be attending a Harvard class while drinking a sangria

[vijethsudhir]

Thank You Sir. I'm from India, was googling for beginners Python course. I found a Quora answer, that first learn basics i.e CS50. I did not knew about CS50 earlier. I listened to complete Lecture. Thanks for elaborating on the 0s and 1s and ASCII, Unicode etc. This made me aware of the History, foundation and roots of computer science. :-)

[rivrr]

I can finally tell my Asian parents what they wanna hear "Mom, Dad, I'm going to Harvard" .... XD

[shreyaved]

Professor is literally sweating and panting!❣I have never seen so friendly a professor teaching so magically . I thank the day when I too this cs50 free course. He is amazing. Lots of love from India.

[uc-browserinfo-techchannel]

Feels good to be in a good school.
Just amazing.
Truly, computer science is pure practical when you got the right tutor. Nigeria I come from

[cslaviero]

As a CS professor I feel inspired when watching this beautiful introduction to computer science. Such an amazing introduction to these topics!

[YEESJAY]

00:00:00 - Introduction
00:02:35 - Representation
00:06:02 - Binary
00:09:17 - Binary Bulbs (Demo)
00:12:22 - Representing Letters
00:14:08 - Abstraction
00:15:35 - Unicode
00:17:21 - RGB
00:19:38 - Representing Images and Video
00:21:28 - Finding Mike Smith
00:24:54 - Solving Problems Effectively
00:28:20 - Pseudocode
00:31:18 - Scratch
00:33:16 - The Scratch Editor
00:39:58 - meow
00:42:22 - count0
00:43:42 - pet0
00:44:42 - pet1
00:45:25 - bounce0
00:48:15 - bounce1
00:48:49 - bark
00:50:38 - marco
00:52:19 - cough
00:54:03 - Custom Blocks
00:56:09 - Oscartime
00:58:21 - Ivy's Hardest Game

[pps]

Wish my college professors were this passionate about the subject and teaching.

[benardnguyo]

At 52:50 .
Lecturer: It's not uncommon to cough 3 times.
Me in 2020: *Coughs 3 times..* gets kicked out of lecture hall.

[alirizvi]

Friend: **sends me a joke**
Me:
Friend : WTF is that?
Me: You wouldn't get it

[samuelhervas]

I’ve never seen someone as passionate about teaching as David J Malan. This course would’ve been twice as hard without his energy and teaching skills, thank you David! I’m in week 4 rn, Spaniard here🙌🏻

[Ben-zzmh]

I have never seen this kind of wonderful Intro to Computational Thinking. You are simply awesome.

[MsFghhf]

HE JUST TORE THE BOOK APART I'M LOVING THIS LECTURE SO FAR OH MY GOD

[churchillosimbo]

Woah, this class got a whole friggin' theme song. Harvard don't play, I see.