# Moore and Mealy machines MCQs

What is a Moore machine?

a) A finite state machine where outputs depend only on the current state.

b) A finite state machine where outputs depend on both the current state and the input.

c) A type of Turing machine.

d) A type of pushdown automaton.

Answer: a) A finite state machine where outputs depend only on the current state.

What is a Mealy machine?

a) A finite state machine where outputs depend only on the current state.

b) A finite state machine where outputs depend on both the current state and the input.

c) A type of Turing machine.

d) A type of pushdown automaton.

Answer: b) A finite state machine where outputs depend on both the current state and the input.

In a Moore machine, when is the output generated?

a) On state transitions.

b) On entering a state.

c) On exiting a state.

d) On receiving input.

Answer: b) On entering a state.

In a Mealy machine, when is the output generated?

a) On state transitions.

b) On entering a state.

c) On exiting a state.

d) Independently of state transitions.

Answer: a) On state transitions.

Which machine typically has fewer states for the same functionality, Moore or Mealy?

a) Moore

b) Mealy

Answer: b) Mealy

Which machine has its output associated with the transitions?

a) Moore

b) Mealy

Answer: b) Mealy

Which of the following is true about the outputs of a Moore machine?

a) They can change only at state transitions.

b) They can change on each input.

c) They are independent of the state.

d) They depend on both the state and input.

Answer: a) They can change only at state transitions.

Which machine model is typically easier to design and debug due to its output structure?

a) Moore

b) Mealy

Answer: a) Moore

In which machine can the output change without a state transition?

a) Moore

b) Mealy

Answer: b) Mealy

For which machine type is the output function

𝑍

=

𝑓

(

𝑄

)

Z=f(Q), where

𝑄

Q is the state?

a) Moore

b) Mealy

Answer: a) Moore

For which machine type is the output function

𝑍

=

𝑓

(

𝑄

,

𝑋

)

Z=f(Q,X), where

𝑄

Q is the state and

𝑋

X is the input?

a) Moore

b) Mealy

Answer: b) Mealy

In terms of real-time response, which machine is typically faster?

a) Moore

b) Mealy

Answer: b) Mealy

Which machine has an output that is a function of the current state and the current input?

a) Moore

b) Mealy

Answer: b) Mealy

Which machine type generally has a simpler state diagram?

a) Moore

b) Mealy

Answer: a) Moore

In which machine are the outputs labeled on the states themselves?

a) Moore

b) Mealy

Answer: a) Moore

Which machine can provide immediate output changes in response to inputs?

a) Moore

b) Mealy

Answer: b) Mealy

Which machine’s state diagram can be more complex due to the need to include input on transitions?

a) Moore

b) Mealy

Answer: b) Mealy

In which machine does the output tend to be more stable, not changing as frequently?

a) Moore

b) Mealy

Answer: a) Moore

Which machine type might require more states to achieve the same function due to its output structure?

a) Moore

b) Mealy

Answer: a) Moore

Which of the following applications can use Moore machines?

a) Traffic light control systems

b) Real-time data processing where immediate response to input is critical

c) Synchronous counters

d) Communication protocol design

Answer: a) Traffic light control systems

## MCQs of Digital Logic Design (DLD)

**Introduction to Digital Systems**

- Analog vs. Digital signals MCQs
- Binary numbers and arithmetic MCQs
- Logic levels and noise margins MCQs

**Boolean Algebra**

- Basic logic operations (AND, OR, NOT) MCQ
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**Combinational Logic**

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- SR Latch, D Latch MCQ
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**Counters and Registers**

- Synchronous, Asynchronous (ripple), Up/Down counters MCQs
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**State Machines**

**Finite State Machines (FSMs)**

**Memory and Programmable Logic MCQs**

**Memory Devices**

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## More MCQs of Digital Logic Design (DLD)

- SET 1: DLD MCQs with answers (dld mcqs with answers)
- SET 2: DLD MCQs (dld basic mcqs)
- SET 3: DLD MCQs (solved mcqs of dld)
- SET 4: DLD MCQs (dld repeated mcqs)
- SET 5: DLD MCQs (dld important mcqs)
- SET 6:DLD MCQs DLD Solved MCQs Answers PDF

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