Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q261: What is the propagation delay time for a TTL gate changing from high to low?
- A: 3 ns
- B: 9 ns
- C: 10 ns
- D: 15 ns
View Answer
B
Q262: What is the maximum number of inputs that can be connected to a TTL gate's output in its series?
- A: 10
- B: 20
- C: 40
- D: 50
View Answer
B
Q263: What is the unit load for a TTL gate?
- A: 10 μA
- B: 100 μA
- C: 1 mA
- D: 10 mA
View Answer
A
Q264: What is the fan-out of a CMOS gate dependent on?
- A: Frequency of operation
- B: Power dissipation
- C: Propagation delay
- D: Voltage levels
View Answer
A
Q265: What is the speed-power product (SPP) a measure of?
- A: Performance of a logic circuit
- B: Propagation delay
- C: Power dissipation
- D: Noise margin
View Answer
A
Q266: What is the maximum clock rate for a 74HC series CMOS gate?
- A: 50 MHz
- B: 100 MHz
- C: 150 MHz
- D: 170 MHz
View Answer
D
Q267: What is the typical static power dissipation for a 74LV CMOS gate?
- A: 0.0016 mW
- B: 0.0055 mW
- C: 0.0008 mW
- D: 0.00275 mW
View Answer
A
Q268: What is the Boolean expression for an AND gate?
- A: A + B
- B: A.B
- C: A + B + C
- D: A.B.C
View Answer
B
Q269: Which of the following is the complement of the Boolean variable X?
- A: X
- B: X
- C: X
- D: X
View Answer
A
Q270: What does a sum term in Boolean algebra represent?
- A: The product of literals
- B: The sum of literals
- C: The difference of literals
- D: The negation of literals
View Answer
B