| Definition |
Changes its output based on the present state and current input. |
Output depends only on the current state, not on the current input. |
| Output |
Places output on the transition. |
Also places output on the transition. |
| States |
Has comparatively fewer or the same states as the Moore machine. |
Has comparatively fewer or the same states as the Mealy machine. |
| Value of Output Function |
The output function becomes a function of transitions and changes when input logic is done in the present state. |
The output function’s value becomes a function of the current state along with changes at the edges of the clock when a state change occurs. |
| Reaction to Inputs |
Reacts comparatively faster to inputs, usually in the same clock cycle. |
Requires more logic for decoding output, resulting in more delays in the circuit. Typically reacts after one clock cycle. |
| State and Output |
The asynchronous generation of output through its state alters to synchronous on the present clock. |
Both state and output change synchronously with its clock edge. |
| Requirement of States |
Generally requires only a very few states for the process of synthesis. |
Requires more states for synthesis compared to Mealy machine. |
| Requirement of Hardware |
Requires very little hardware for designing. |
Requires more hardware for designing. |
| Counter |
Cannot be referred to as a Mealy Machine. |
Can be referred to as a Moore Machine. |
| Design |
The designing process may not be very easy. |
The designing process is relatively easy. |
