Digital Logic and Design MCQs with Answers
Practice important Digital Logic and Design MCQs with answers and explanations.
Multiple Choice Questions
Q591: What happens to the counter output when the CLR signal is active at interval t1?
- A: The counter increments
- B: The counter output is reset
- C: The counter stops
- D: The counter loads new data
View Answer
B
Q592: How is the 74HC163 Synchronous Counter loaded with 4-bit data?
- A: By activating the CLR signal
- B: By activating the LOAD signal
- C: By deactivating the ENT signal
- D: By deactivating the ENP signal
View Answer
B
Q593: What does the RCO output indicate in a 74HC163 counter?
- A: The counter is disabled
- B: The counter has reached its terminal count
- C: The counter is reset
- D: The counter is loaded with data
View Answer
B
Q594: What sequence does a cascaded decade counter count in?
- A: 0001 to 1111
- B: 0000 to 1001
- C: 0000 to 1111
- D: 0001 to 1001
View Answer
B
Q595: 74HC163 has two enable input pins which are _______ and _________
- A: ENP, ENT
- B: ENI, ENC
- C: ENP, ENC
- D: ENT, ENI
View Answer
A
Q596: How is a MOD-7 counter implemented using the 74HC163?
- A: By presetting the counter with 0000
- B: By loading the counter with 1001
- C: By resetting the counter at 1111
- D: By clearing the counter at 1001
View Answer
B
Q597: What is the key difference between the 74HC161 and 74HC163 counters?
- A: The 74HC161 has a synchronous clear input
- B: The 74HC161 has an asynchronous clear input
- C: The 74HC163 has a larger count sequence
- D: The 74HC163 has an asynchronous load input
View Answer
B
Q598: How is the maximum count sequence of cascaded counters determined?
- A: By the number of flip-flops used
- B: By the initial count value
- C: By the RCO output of the first counter
- D: By the RCO output of the last counter
View Answer
D
Q599: What does an up-down counter do?
- A: Only increments the count
- B: Only decrements the count
- C: Increments and decrements the count
- D: Resets the count on command
View Answer
C
Q600: What does a Karnaugh Map help to simplify in Boolean algebra?
- A: Logic gates
- B: Boolean expressions
- C: Arithmetic operations
- D: Digital circuits
View Answer
B