Sequential Logic Circuits problems
- 1. Synchronous counters eliminate the delay problems encountered with asynchronous (ripple) counters because the:
Options- A. input clock pulses are applied only to the first and last stages
- B. input clock pulses are applied only to the last stage
- C. input clock pulses are not used to activate any of the counter stages
- D. input clock pulses are applied simultaneously to each stage Discuss
Correct Answer: input clock pulses are applied simultaneously to each stage
- 2. Which type of device may be used to interface a parallel data format with external equipment's serial format?
Options- A. key matrix
- B. UART
- C. memory chip
- D. serial-in, parallel-out Discuss
Correct Answer: UART
- 3. What is meant by parallel-loading the register?
Options- A. Shifting the data in all flip-flops simultaneously
- B. Loading data in two of the flip-flops
- C. Loading data in all four flip-flops at the same time
- D. Momentarily disabling the synchronous SET and RESET inputs Discuss
Correct Answer: Loading data in all four flip-flops at the same time
- 4. An asynchronous decade counter increases its value by ten for each clock pulse.
Options- A. True
- B. False Discuss
Correct Answer: False
- 5. A multiplexed display circuit uses a technique called time division modulation.
Options- A. True
- B. False Discuss
Correct Answer: False
- 6. The serial-in, parallel-out shift register transfers data from one parallel data bus to another parallel data bus one bit at a time across a single line.
Options- A. True
- B. False Discuss
Correct Answer: False
- 7. Counters are common components in digital clocks.
Options- A. True
- B. False Discuss
Correct Answer: True
- 8. In an asynchronous counter, each state is clocked by the same pulse.
Options- A. True
- B. False Discuss
Correct Answer: False
- 9. Asynchronous inputs will cause the flip-flop to respond immediately with regard to the clock input.
Options- A. True
- B. False Discuss
Correct Answer: False
- 10. A serial-in, serial-out shift register transfers data from one line of a parallel bus to another line one bit at a time.
Options- A. True
- B. False Discuss
Correct Answer: False
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