Uploaded November 2020 | Updated September 2026, 3 weeks ago

---

A little exploration of some of the fundamentals of how computers work. Logic gates, binary, two's complement; all that good stuff!

Support my work (and get early access to new videos and source code) on Patreon or Nebula
* Patreon: patreon.com/SebastianLague
* Nebula: go.nebula.tv/sebastianlague

Source code and Simulator download:
* Simulation tool (work in progress): sebastian.itch.io/digital-logic-sim
* GitHub: github.com/SebLague/Digital-Logic-Sim

Resources and Inspiration:
* youtube.com/c/BenEater
* coursera.org/learn/build-a-computer
* en.wikipedia.org/wiki/Two%27s_complement

Chapters:
00:00 Intro
00:50 Logic Gates
03:09 The Simulation
05:06 Binary Numeral System
06:16 Binary Addition Theory
07:24 Building an Adder
12:11 Negative Numbers Theory
15:08 Building the ALU
17:43 Outro

Music:
"A Quiet Place" by Jordan White
"A New Perspective" by Ryan Smart
"Beyond the Horizon" by Sounds Like Sander
"Crystal Bursts" by Cody Martin
"Air" by Assaf Ayalon
"Elastic Vibe" by Ziv Moran
"Gotcha!" by Avocado Junkie

Images:
en.wikipedia.org/wiki/Vacuum_tube#/media/File:8863-Project-Whirlwind-CRMI.JPG