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

Question

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

Answer 1

in moore machine output depends on the current state , while in the mealy machine it depends on both presen state as well as previous states.

Answer 2

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.

Answer 3

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

Answer 4

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.