The number of directed arcs terminating on any state of a state diagram is

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Question

This question was previously asked in

UGC NET Paper 2: Electronic Science June 2019 Official Paper

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Answer 1

The number of directed arcs terminating on any state of a state diagram is independent of the number of inputs.

Explanation:

The output of the Mealy machine is a function of the present state as well as present input, so the output does not remain stable over the entire clock.
The outputs of a Mealy Machine can change asynchronously in response to any change in the inputs.
The disadvantage associated with the circuit is that if any input transient glitches are present, they are directly conveyed to the output.
The output need not change at a Clock Pulse.
It requires less number of states and thereby less hardware to solve any problem.

The block diagram explanation of the Mealy and Moore machine are as shown:

F2 S.B Madhu 15.07.20 D1

F2 S.B Madhu 15.07.20 D2

Mealy Machine	Moore Machine
Output depends on both the present state and present input	Output depends on only the Present/current state
It has fewer states than the Moore machine	Has more states than the Mealy machine
The mealy machine reacts faster to inputs, they generally react in the same clock cycle	Moore machines, more logic is required to decode the outputs resulting in more circuit delays, they generally react one clock cycle later