Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q221: Which gate has the function of a logical addition operation?
- A: AND Gate
- B: OR Gate
- C: NOT Gate
- D: NAND Gate
View Answer
B
Q222: What is the expression for a NOT gate?
- A: F = A
- B: F = A + B
- C: F = A . B
- D: F = A / B
View Answer
A
Q223: How can an AND gate be implemented using NAND gates?
- A: Using a single NAND gate
- B: Using two NAND gates
- C: Using three NAND gates
- D: Using four NAND gates
View Answer
B
Q224: What does the output of a NOR gate represent when all inputs are 0?
- A: zero
- B: 1
- C: 10
- D: 1
View Answer
B
Q225: Which gate is used in car door alarm systems to detect if any door is open?
- A: AND Gate
- B: OR Gate
- C: NOT Gate
- D: NAND Gate
View Answer
B
Q226: What is the role of the enable/disable signal in a counter device using an AND gate?
- A: To count continuously
- B: To stop counting
- C: To reset the counter
- D: To start the counter
View Answer
B
Q227: How many inputs does a typical OR gate have?
- A: 1
- B: 2
- C: 3
- D: 4
View Answer
B
Q228: What is the output of a NOT gate when the input is 0?
- A: zero
- B: 1
- C: 10
- D: 1
View Answer
B
Q229: Which gate's function table output is 1 when at least one input is 1?
- A: AND Gate
- B: OR Gate
- C: NOT Gate
- D: NOR Gate
View Answer
B
Q230: What is the purpose of a bubble in a logic gate symbol?
- A: To invert the output
- B: To invert the inputs
- C: To represent a NOT gate
- D: To show a NAND gate
View Answer
C