About digiwleea
A hands-on course in how a computer is built from switches
digiwleea is a free, browser-based course and sandbox for learning digital logic from the ground up. Most courses teach logic gates as abstract symbols. digiwleea starts one level lower, at the transistor, the voltage-controlled switch every gate is actually made of, and builds upward: transistor to NOT to NAND to adder to flip-flop to register to ALU to a working 8-bit CPU.
Everything here is a real, simulated switch-level circuit, not an animation. The simulator settles each gate from its transistors, so when you build a NAND you are wiring actual NMOS and PMOS devices and watching the output resolve. Every diagram in these lessons is a live circuit you can open and edit in the lab.
The lessons are the course; the circuit sandbox is free to use forever. An optional AI tutor, Wleea, can explain a concept or build a verified circuit on request. The aim is simple: by the end you understand, concretely, how a computer is built out of nothing but switches.
digiwleea is built and maintained by an independent developer who wanted a tangible way to learn how computers work at the switch level, and is sharing the result.