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How to use Logic Gate Simulator

Get the best out of Logic Gate Simulator: every option explained, a worked example, and what to check when the output is not what you expected.

Updated July 31, 2026

What it does

Toggle boolean inputs and inspect outputs and truth tables for common logic gates. It runs entirely in your browser — your input never leaves your device.

Options

Every setting this tool exposes, straight from the code that validates it.

OptionTypeDefaultWhat it does
gateone of: AND, OR, NOT, NAND, NOR, XOR, XNORANDDefaults to AND.
inputAtrue / falsetrueDefaults to true.
inputBtrue / falsefalseDefaults to false.

Worked example

Run these settings on the tool page:

  • gate: AND
  • inputA: true
  • inputB: false

You get:

{
  "output": false,
  "truthTable": [
    {
      "a": 0,
      "b": 0,
      "output": 0
    },
    {
      "a": 0,
      "b": 1,
      "output": 0
    },
    {
      "a": 1,
      "b": 0,
      "output": 0
    },
    {
      "a": 1,
      "b": 1,
      "output": 1
    }
  ]
}

Getting the result you want

Most of the control here is in the options above. If the output is not what you expected, the setting to check first is gate and inputA — those change the shape of the output rather than the input it accepts.

Troubleshooting

  • It is slow on very large input. Everything runs in your browser, so speed depends on your device. Very large inputs are best split up, or run through the API where the work happens on our servers.

Automating it

The same logic is available as a REST endpoint, so you can run it from a script, a CI job or your own app.

Bash
curl "https://api.toolsxpo.com/v1/logic-gates" \
  -H "Authorization: Bearer $TOOLSXPO_KEY"

It costs 1 credit per successful call. See the full endpoint reference, or try it in the playground.

Tools covered here

Logic Gate Simulator

Math

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