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Finite State Machines
One state at a time, transitions on events: the structure behind protocol parsers, button debouncers, and comms stacks, implemented as a switch or a transition table.
25 min read
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What is a finite state machine and why is it the right tool for protocol parsing?Compare implementing an FSM as a switch statement versus a transition table.What's the difference between a Moore and a Mealy machine?What are the most common FSM bugs?When does a flat FSM become the wrong structure, and what do you do?
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