Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q671: How many cells are in a Karnaugh Map for 2 variables?
- A: 2
- B: 4
- C: 8
- D: 16
View Answer
B
Q672: Which Boolean expression is simplified by the Karnaugh Map for J-K flip-flops?
- A: J2 = Q1Q0X + Q1Q0
- B: K2 = Q1X
- C: J0 = Q2Q1X
- D: K0 = Q1X
View Answer
A
Q673: For the first state assignment, what is the Boolean expression for D2?
- A: Q2Q1Q0X + Q1Q0X
- B: Q2 + Q0X + Q1Q0
- C: Q2Q0X + Q1Q0X + Q1Q0X + Q2Q1Q0X
- D: Q2Q1X + Q1Q0X
View Answer
A
Q674: In a Moore Machine, which state has the output 111 when the input X is 1?
- A: a
- B: b
- C: c
- D: f
View Answer
A
Q675: In the Mealy Machine, what is the output for state 'b' when input X=0?
- A: 111
- B: 1
- C: 11
- D: 100
View Answer
C
Q676: Which flip-flop input table corresponds to the Moore Machine described in the text?
- A: Table 33.6
- B: Table 33.7
- C: Table 33.8
- D: Table 33.10
View Answer
A
Q677: What is the simplified Boolean expression for J0 in the Karnaugh Map for the Mealy Machine?
- A: Q2Q1X
- B: Q1X
- C: Q2Q1
- D: Q0X
View Answer
A
Q678: Which output Boolean expression is derived from the Karnaugh Map for the Mealy Machine?
- A: O2 = Q2X + Q2Q1
- B: O1 = Q1Q0X + Q2Q0
- C: O0 = Q1X + Q2Q1
- D: All of the above
View Answer
D
Q679: For the Mealy Machine, what is the next state if the current state is 010 and X=1?
- A: 110
- B: 1
- C: 100
- D: 11
View Answer
A
Q680: What should be done if there are unused states in state assignment?
- A: Choose the best state variable combinations
- B: Ignore the unused states
- C: Maximize the bit changes
- D: Minimize the state variables
View Answer
A