What is Logic Circuit Simulator
A browser app that lets you build digital circuits simply by dragging logic gates such as AND, OR, NOT, XOR, and NAND onto the canvas and wiring their terminals together. Signal propagation is evaluated in real time, so when you toggle an input, the output changes on the spot.
Perfect for learning about logic circuits or quickly testing an idea. No installation or account registration is required—just open the page and start using it right away.
Key features
- A rich set of gates — Basic logic gates such as AND / OR / NOT / XOR / NAND are ready to use.
- Drag-and-drop placement — Drag gates from the sidebar onto the canvas to place them.
- Wiring with a click — Connect an output terminal to an input terminal with a click to build your circuit.
- Real-time evaluation — As you wire things up, signals propagate and outputs update instantly.
- Canvas controls — Pan by dragging, right-click to delete a component, and clear the board with a single tap.
How to use
- Drag the gate you want to use from the left sidebar onto the canvas to place it.
- Click an output terminal, then click the input terminal you want to connect it to in order to wire them.
- Toggle the state of an input, and the signals across the entire circuit update in real time.
- Delete unneeded components with a right-click, or wipe everything with
Clear Board.
Requirements & privacy
It works in modern browsers such as Chrome, Safari, Edge, and Firefox (PC recommended). All circuit processing is done entirely within your browser (client-side), and the circuits you create are never sent to an external server.