CS50 2021 in HDR - Lecture 0 - Scratch

David J. Malan introduces computer science fundamentals, binary representation, algorithms, and programming concepts using Scratch.

This is CS50, Harvard University's Introduction to the intellectual enterprises of computer science and the art of programming. Enroll for free at cs50.edx.org/. Slides, source code, and more at cs50.harvard.edu/x. Playlist at youtube.com/playlist?list=PLhQjrBD2T383f9scHRNYJkior2VvYjpSL. TABLE OF CONTENTS 00:00:00 - Intro 00:01:17 - Problem Solving 00:05:36 - Representation 00:06:14 - Binary 00:13:25 - Letters 00:16:40 - ASCII 00:20:12 - Unicode 00:25:38 - Color 00:28:00 - Images 00:29:28 - Videos 00:30:43 - Music 00:31:50 - Questions on representation 00:35:41 - Algorithms 00:40:33 - Time to solve 00:43:57 - Pseudocode 00:50:35 - Scratch 00:52:39 - Scratch blocks 00:57:22 - Hello world 01:03:30 - Inputs to outputs, outputs to inputs 01:05:50 - Text to speech 01:07:41 - Meow 01:08:35 - Loops 01:10:42 - Custom blocks 01:15:50 - Conditionals 01:17:25 - Forever 01:18:42 - Video sensing 01:20:25 - Whack-a-mole 01:21:57 - One piece at a time 01:22:48 - Oscartime 01:24:24 - Oscartime stage 01:25:30 - Oscartime trash can 01:27:18 - Oscartime falling trash 01:29:42 - Oscartime dragging trash 01:31:30 - Putting Oscartime together 01:33:42 - Movement 01:35:32 - Movement's abstractions 01:37:30 - Bouncing 01:39:05 - Following 01:41:00 - Ivy's Hardest Game *** This is CS50, Harvard University's introduction to the intellectual enterprises of computer science and the art of programming. *** HOW TO SUBSCRIBE youtube.com/subscription_center?add_user=cs50tv HOW TO TAKE CS50 edX: cs50.edx.org/ Harvard Extension School: cs50.harvard.edu/extension Harvard Summer School: cs50.harvard.edu/summer OpenCourseWare: cs50.harvard.edu/x HOW TO JOIN CS50 COMMUNITIES Discord: discord.gg/cs50 Ed: cs50.harvard.edu/x/ed Facebook Group: facebook.com/groups/cs50/ Faceboook Page: facebook.com/cs50/ GitHub: github.com/cs50 Gitter: gitter.im/cs50/x Instagram: instagram.com/cs50 LinkedIn Group: linkedin.com/groups/7437240/ LinkedIn Page: linkedin.com/school/cs50/ Medium: cs50.medium.com/ Quora: quora.com/topic/CS50 Reddit: reddit.com/r/cs50/ Slack: cs50.edx.org/slack Snapchat: snapchat.com/add/cs50 SoundCloud: soundcloud.com/cs50 Stack Exchange: cs50.stackexchange.com/ TikTok: tiktok.com/@cs50 Twitter: twitter.com/cs50 YouTube: youtube.com/cs50 HOW TO FOLLOW DAVID J. MALAN Facebook: facebook.com/dmalan GitHub: github.com/dmalan Instagram: instagram.com/davidjmalan/ LinkedIn: linkedin.com/in/malan/ Quora: quora.com/profile/David-J-Malan TikTok: tiktok.com/@davidjmalan Twitter: twitter.com/davidjmalan *** CS50 SHOP cs50.harvardshop.com/ *** LICENSE CC BY-NC-SA 4.0 Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Internation