# Difference between Mealy Machine and Moore Machine

Moore machines and Mealy machines are two different types of computing machines that can be used to model the behavior of a computer.

The main difference between these two types is that a mealy machine can produce multiple outputs for a single input while a Moore machine will produce only one valid production at any given time.

Before we move to the differences, let’s understand what are Mealy Machine and Moore Machine:

• Mealy Machine: Mealy machines are state-dependent, meaning that they can change their output depending on the current state of the machine.
• Moore Machine: Moore machine is a concept in computer science that describes a system with a finite state machine and an input.

Now, let’s move to Mealy Machine vs Moore Machine:

## Major differences between Mealy Machine and Moore Machine

Mealy Machine Moore Machine
Mealy Machines output results based on both their current state and the input signal Moore Machines only output results based on their current state.
Mealy Machines have faster response times because they output results based on both the current state and the input signal. Moore Machines may have slower response times because they only output results based on their current state.
This machine needs fewer states for the implementation of the same function. This machine has a more significant number of states for the implementation of the same function.
Mealy Machines are more sensitive to noise and errors in the input signal because they output results based on both the current state and the input signal. Moore Machines are less sensitive to noise and errors because they only output results based on their current state.
Mealy Machines are more complex to design and implement compared to Moore Machines because they have more variables to consider. Moore Machines are easier to design and implement compared to Mealy Machines.

That’s it.

Note that sometimes, the question might also be asked as “distinguish between Mealy Machine and Moore Machine”.

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## Final words

So we can conclude that the Mealy machine and the Moore machine are two similar types of machines. They are both sequential machines, which means they process information sequentially. The difference between them is in the way that they process information.

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