Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q661: In ________ outputs depend only on the combination of current state and inputs.
- A: Mealy machine
- B: Moore Machine
- C: State Reduction table
- D: State Assignment table
View Answer
B
Q662: In the state reduction process, what happens when two states are found to be equivalent?
- A: One state is removed and replaced by the other
- B: Both states are combined into one state
- C: Both states are kept as separate states
- D: The outputs of the states are averaged
View Answer
A
Q663: What is the effect of state reduction on the number of flip-flops in a state machine?
- A: It can reduce the number of flip-flops if the number of states decreases
- B: It always increases the number of flip-flops
- C: It has no effect on the number of flip-flops
- D: It simplifies the logic gate configuration
View Answer
A
Q664: What is the main goal of state assignment in a sequential circuit?
- A: Minimize bit changes
- B: Maximize state transitions
- C: Maximize bit changes
- D: Minimize flip-flops
View Answer
A
Q665: A flip-flop is a type of ________.
- A: Sequential circuit
- B: Combinational circuit
- C: Memory unit
- D: Data converter
View Answer
A
Q666: In the context of state assignments, what is a key benefit of minimizing bit changes between states?
- A: Simplifies combinational logic
- B: Increases state complexity
- C: Requires more flip-flops
- D: Reduces state count
View Answer
A
Q667: Given the states a, b, c, d, and f with assignments 000, 001, 010, 011, and 100 respectively, which state assignment results in fewer bit changes?
- A: Assignment 1
- B: Assignment 2
- C: Assignment 3
- D: All are equal
View Answer
C
Q668: How many states are there in the Moore Machine described?
- A: 4
- B: 5
- C: 6
- D: 7
View Answer
C
Q669: In the Moore Machine state diagram, what is the sequence of states starting from 011?
- A: 011, 111, 001, 010, 100, 110
- B: 011, 001, 010, 100, 110, 111
- C: 011, 111, 010, 100, 110, 001
- D: 011, 001, 100, 110, 010, 111
View Answer
A
Q670: What does the Karnaugh Map help simplify in Boolean algebra?
- A: Logic gate implementation
- B: Boolean expressions
- C: Arithmetic operations
- D: Sequential circuits
View Answer
B