How Do Computers Remember?

Exploring some of the basics of computer memory: latches, flip flops, and registers!

Resources and Inspiration:

Chapters:
00:00 Intro
00:33 Set-Reset Latch
04:33 Data Latch
05:56 Race Condition!
07:32 Breadboard Data Latch
09:36 Asynchronous Register
11:41 The Clock
13:03 Edge Triggered Flip Flop
14:18 Synchronous Register
16:48 Testing 4-bit Registers
18:25 Outro

Music:
"Frontier" by Shimmer
"A Quiet Place" by Jordan White
"Constellations" by Acreage
"Beyond the Horizon" by Sounds Like Sander
"Crystal Bursts" by Cody Martin
"When Rain Comes" by Tide Electric
"Air" by Assaf Ayalon
"Mallets of Mischief" by Rhythm Scott

Images:

[SebastianLague]

Hi everyone, I hope you enjoy the video!
By popular demand, the little simulation tool is now available. Links below :)

[niceguysayshi]

These Videos are so good, they should be shown in school

[sasino]

I'm not exaggerating this is basically an entire course that I took in university summed up in less than 20 minutes

[jesperk]

These computer series videos are so well made, thanks so much for making them :D

[zeorxofline]

I was struggling at university to understand digital electronics ( flip flops and so on), I tried all my efforts and passed my test at last, but seeing this video in about 20 minutes explains the whole course, just WAW WAW WAW.

[psellison]

In all my years I have NEVER had anyone explain these concepts to me in such a clear and straight forward manner! I love this video. These are amazing Sebastian and I hope you do more!

[heh_boaner]

I would binge watch an entire series like this.

[michaelerhardt]

his cat is actually a computer scientist expert trying to build the circuit for him

[muteman]

I don't know about you guys, but I'm here to finally learn how redstone computers work

[ktvx.]

This guy in 10 years: "building a DIY quantum computer"

[EuropaE]

Hey Sebastian. I know I'm 2 years late to the party, but I just recently discovered this series of yours, and following along has been a blast! I'm curious by nature and have always wanted to understand fundamentally how computers work, so upon discovering your videos and the simulation tool you've made available, I knew I'd struck gold. I've sunk 10s of hours into grasping how each logic gate works and how stringing them together can eventually result in a functioning computer. I haven't even gotten to the later videos in this series, but I've already learned so much that I want to thank you for doing all of this. You're amazing!

[jaytea]

you are SUCH a good teacher! i'm absolutely loving this series so far. every single step between the paper clip and-gate at the start of the first video to the 4-bit register at the end of this video has felt completely clear and logical. and you're really good at making effective visuals to go along with whatever you're describing. mad props, keep it up!

[genericytprofile]

3 episodes into the future: So now as you can see we have a fully functioning 64bit computer. But how do we do anything with it? Well for that we'd need to make an operating system..

[emanual]

I know others have said it, but a continuation of this series that tackles RAM and beyond would be amazing

[pentzilam]

I'm using this video as an assistant for me to build a simple redstone computer in Minecraft and so far I have been able to recreate every circuit! Admittedly, its getting a bit large in my world but I'm excited for the next episode!!! Keep up the good work man.

[moosipea]

I can't tell if he's just moving the mouse cursor REALLY smoothly or its animated

[rmrob]

Please, please do more of this series. So incredibly informative and digestible. I ended up downloading your simulator and tried to guess what the solutions were before you showed them. I was wrong most of the time, but it was very fun and scratched a brain-itch I didn't realize I had. Thank you.

[bobdueck]

This is a *really* good explanation of a basic topic in digital design. Well done! (I taught this material for 30 years.)

[amalirfan]

this is ASMR for my brain. Feels like I am sleeping in a winter morning.

[TheBookworm]

I took a class on this years back in college and never did wrap my brain around these concepts. This just about covered the last 2 months of that class in 20 minutes and made way more sense than any lecture or book.