Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q551: What type of One-Shot remains in its unstable state for a fixed period?
- A: Retriggerable
- B: Nonretriggerable
- C: Edge-triggered
- D: Pulse-triggered
View Answer
B
Q552: What happens in a retriggerable One-Shot if a new trigger is applied during the unstable state?
- A: Resets to stable state
- B: Retriggers the One-Shot
- C: Ignores the new trigger
- D: Extends the unstable state
View Answer
B
Q553: What does the 555 Timer function as in an Astable multivibrator?
- A: Stable state device
- B: Monostable
- C: Clock generator
- D: Oscillator
View Answer
D
Q554: What is the primary function of an Astable multivibrator?
- A: Generate stable state
- B: Produce a clock pulse
- C: Continuously oscillate
- D: Trigger external events
View Answer
C
Q555: What is a common issue in synchronous circuits related to clock signals?
- A: Propagation delay
- B: Clock skew
- C: Metastability
- D: Setup time violation
View Answer
B
Q556: What type of flip-flop is commonly used to avoid glitches due to race conditions?
- A: Positive-edge triggered
- B: Negative-edge triggered
- C: Master-slave
- D: T flip-flop
View Answer
B
Q557: What can cause the clock signals to arrive at different times in a synchronous circuit?
- A: Signal attenuation
- B: Propagation delay
- C: Temperature change
- D: Load variation
View Answer
B
Q558: How can problems caused by clock skew be eliminated?
- A: Increasing clock speed
- B: Equalizing clock delays
- C: Reducing power supply voltage
- D: Adding more flip-flops
View Answer
B
Q559: What type of counter changes states asynchronously?
- A: Synchronous counter
- B: Ripple counter
- C: Ring counter
- D: Johnson counter
View Answer
B
Q560: What determines the Modulus of a counter?
- A: Number of flip-flops used
- B: Clock frequency
- C: Number of states
- D: Input signal
View Answer
A