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What is the difference between a Moore and a Mealy state machine?

April 26, 2017difference Education Machine mealy moore Reference State Wordplay words

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What is the difference between a Moore and a Mealy state machine?

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Hi Jonathan, Ya what Mark said was right, a Moore state machine may require more states than a Mealy state machine to accomplish the same task, and therefore use more macro cells for state registers. The output logic of a Mealy state machine may be more complex than the output logic of an equivalent Moore state machine, and therefore use more product terms.

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Moore state machines are controlled in such a way that the outputs are a function of the previous state and the inputs. However, Mealy state machines are controlled in a way such that the Outputs may change with a change of state OR with a change of inputs.

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Moore and Mealy state machines are the names for two types of architectures when designing a state machine.