First Steps

A Single Wire

Wire a single input directly to a single output — the smallest possible circuit.

Four Independent Wires

Wire four independent inputs to four independent outputs with no interaction between them.

Inverter (NOT Gate)

Build a NOT gate: the output is the logical inverse of the input.

2-Input AND Gate

Build a 2-input AND gate whose output is 1 only when both inputs are 1.

Output Zero

Drive an output signal permanently low.