Logic gate simulator

Examples

Gates

Modules

Build a module on its own sheet. Its inputs and outputs become the pins you wire into a larger circuit. Double-click a module to open it. Each copy keeps its own Q.

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Outputs

Truth table

Open inputs read as 0. Each pass, every gate reads the values from the previous pass. When a pass changes nothing, that result is shown. A loop that keeps flipping shows X. A D flip-flop copies D to Q on the rising edge of CLK and then holds it. The JK flip-flop is a module built from that flip-flop. New here? Read the short guides.

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