Integrated Circuit Designer Playground
Twelve basic components, a bigger board, and a continuity probe. Click a part to place it, click two pins to wire them, then hit Run for a real graph-based simulation — no images, no libraries, just canvas and JavaScript.
Parts Bin
click a part, then click the board
Parts Legend & How It Simulates
what each symbol does in this playground
This is a teaching toy, not SPICE: capacitors and diodes are treated as simple conductors (no charge curve or polarity check), potentiometers split their track at the wiper based on position, and the NPN transistor acts as a basic switch — if its base is electrically connected back to the battery's positive terminal, the collector–emitter path closes. Good for building intuition about loops, switches, and transistor-as-switch logic; not for exact circuit behavior.