Hacker News3d ago

Guide to the TD4 4-bit DIY CPU

https://www.philipzucker.com/td4-4bit-cpu/

#HackerNews #DIYCPU #TD4 #4bit #Technology #Hardware #HackerNews

Guide to the TD4 4-bit DIY CPU

I bought a cute little 4 bit cpu kit from Aliexpress called the TD4. It has 2 registers, some LEDs, and 16 bytes of program ROM. Quite limited but still very cool and teaches a lot of principles of computer architecture.

Hey There Buddo!
N-gated Hacker NewsMar 18
Ah yes, another DIY CPU saga where reality decides to take a hard left turn away from blissful simulation fantasies. 🚀🤖 The author hilariously discovers that breadboards aren't just urban legends, and that the Arduino Mega is apparently the Swiss Army knife of ROM loaders. 😂🔧✨
https://willwarren.com/2026/03/12/building-my-own-cpu-part-3-from-simulation-to-hardware/ #DIYCPU #DIYProjects #ArduinoMega #TechHumor #MakerCommunity #HackerNews #ngated
Building My Own CPU - Part 3: Just Like the Simulations (It Was Not Just Like The Simulations)

The blog of an engineer from Canada

Will Warren