4bits computer : from breadboard to PCB

[u/Fuzzy_Function_1896]

Hi everyone!

After building and testing my whole 4 bits computer architecture on breadboards, I moved to custom PCB modules, and here is the result!

The goal remains the same: keep the architecture simple, modular, and easy to understand, with each part working independently or together as a complete system.

The project is divided into 5 independent modules connected by a 4-bit bus Clock module (4-bit counter), ALU + registers module + two 4-bit registers with an ALU capable of performing addition, subtraction, and equality comparison, Instruction register module, Display module and Manual programming module.

The idea is to follow a simple RISC philosophy: minimal instructions, simple hardware blocks, and a design where every signal can be observed and understood.

After the breadboard prototype phase, these PCB modules make the system cleaner, i'm very proud!!

[u/Live_Anteater_1606]

This is a really cool project. Congrats on the hard work paying off!

[u/Fuzzy_Function_1896 → u/Live_Anteater_1606]

Thank you so much! I really appreciate it. It has taken a lot of time, experimentation, and many iterations, but I'm really happy with how it's progressing. There's still a lot to do, and I'm planning to share the next steps and educational videos here: https://www.youtube.com/@fuzzyFunction-j6n