Gate Bench

Move a gate by dragging its body. Wire by dragging from a pin on the right of one gate to a pin on the left of another. Flip an input by tapping its switch. Remove a wire by tapping it, or a gate with its × badge. Select an area by dragging on empty canvas, then tap Make module to fold the selection into one named, reusable part. Save writes your whole board to a file, and Load brings one back — your work is also kept in this browser automatically.