Digiwleea
Build a working CPU from transistors, in your browser
What it does
A free, browser-based switch-level logic lab and course. Start from one transistor and build up to a working 8-bit CPU, every circuit really simulated. Tinker in the sandbox, take the auto-checked course, or play the interactive explainers (how gates, binary, memory, and CPUs work). Optional AI tutor builds circuits with you. Free to start.
Does the same job
all alternatives →- IMI made an Ethernet transceiver from logic gates2022 · imihajlov.tk · ▲460
- IMI made a game where you build a CPU from logic gatesJul 2026 · select.supply · ▲102
I built ChipBuilder to make computer architecture more approachable through interactive puzzles. You start with basic logic gates like AND, OR, and NOT, then gradually combine them into adders, multiplexers, memory, an ALU, and eventually a complete CPU. Once you've built the hardware, you can write assembly programs that run on the processor you created. The game is inspired by courses like Nand2Tetris, but everything runs directly in the browser with a visual circuit editor, simulations, and progressively harder challenges.
- IMI made a discrete logic network card2024 · qdiv.dev · ▲541
- OCOnline challenge: Build a CPU from scratch2018 · nandgame.com · ▲143
- WBWe built an 8-bit CPU as 2nd year EE studentsJun 2026 · github.com · ▲108
Hi! me and my friends together built an 8 bit CPU implemented in Logisim purely from scratch. The control unit of this system does not implement the generic microcode ROM or any kind of RAM. This was made purely from discrete logic gates and coded the system to run different programs. key features: Custom 16-instruction Harvard ISA, 8-bit fixed format, 4 general purpose registers Hardwired control unit built entirely from AND/OR gate logic matrix Dual-phase clocking to eliminate race conditions Bootstrap Control Unit that cold-boots via ROM-to-RAM transfer Early-exit conditional…
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