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Finite State Machine Simulator

Run an input sequence through user-defined states and transitions. Processing takes place locally in your browser.

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What Finite State Machine Simulator does

Run an input sequence through user-defined states and transitions.

Worked example

Input

States locked/unlocked; input coin,push

Result

Visited states and final state

Calculation method

Starting from the initial state, each symbol selects a matching transition and records the destination.

Useful workflows

  • Check a small teaching example and inspect intermediate results.
  • Compare an independently calculated answer or software test fixture.
  • Copy the result together with its input notation and selected options.

Limits and review checks

  • Combinatorial, graph and search problems can grow exponentially and are intentionally size-limited.
  • Confirm integer, modular, set-order, precision and rounding assumptions before comparing answers.
  • Cryptography-related pages are educational demonstrations and must not generate or validate production security keys.

Frequently asked questions

Why is my input rejected?

Check separators, variable names, supported operators, numeric ranges and whether the selected algorithm requires integers.

Can I use this result in a high-stakes decision?

Use the tool for learning and independent checks. Verify legal, financial, safety or security decisions with an authoritative method and qualified reviewer.

Processing takes place locally in your browser.