Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q511: What is the purpose of an S-R latch in a digital system?
- A: To amplify signals
- B: To prevent switch bounce from affecting the digital circuit
- C: To increase the voltage
- D: To measure the frequency of a signal
View Answer
B
Q512: What happens to the output of a switch when it is moved up to connect the resistor to the ground?
- A: It fluctuates between logic high and low briefly before settling
- B: It immediately settles to logic high
- C: It immediately settles to logic low
- D: It remains unchanged
View Answer
A
Q513: In the context of an S-R latch, what does the latch do when the switch is bouncing between logic high and low?
- A: It allows the signal to vary freely
- B: It ignores the fluctuations and maintains a stable state
- C: It amplifies the signal
- D: It changes the frequency of the signal
View Answer
B
Q514: What does TTL stand for in digital electronics?
- A: Transistor-Transistor Logic
- B: Time-Triggered Logic
- C: Transistor-Transmitter Logic
- D: Time-Triggered Logic
View Answer
A
Q515: Which logic gate is known as a universal gate?
- A: AND Gate
- B: OR Gate
- C: XOR Gate
- D: NAND Gate
View Answer
D
Q516: What is the binary representation of the decimal number 10?
- A: 0001 1010
- B: 0000 1010
- C: 0001 0010
- D: 0010 0100
View Answer
B
Q517: What is the function of a multiplexer in digital circuits?
- A: To amplify signals
- B: To combine multiple signals into one signal
- C: To separate one signal into multiple signals
- D: To convert analog signals to digital signals
View Answer
B
Q518: Which component is used to store data in a digital circuit?
- A: Transformer
- B: Capacitor
- C: Flip-Flop
- D: Resistor
View Answer
C
Q519: The minimum time for which the input signal has to be maintained at the input of flip-flop is called ______ of the flip-flop.
- A: Set-up time
- B: Hold time
- C: Pulse Interval time
- D: Pulse Stability time (PST)
View Answer
B
Q520: In a flip-flop circuit, what is the primary role of the clock signal?
- A: To amplify the signal
- B: To synchronize changes in the state of the flip-flop
- C: To provide power to the flip-flop
- D: To measure the frequency of the signal
View Answer
B