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- Question
The ring and Johnson shift counters are uncommon circuits that are similar to synchronous counters.
Options- A. True
- B. False
- Correct Answer
- False
- 1. A stage is two storage elements in a register.
Options- A. True
- B. False Discuss
- 2. In a 74164 8-bit shift register, in order for the parallel data output to be synchronously loaded on the negative clock edge, the parallel enable input is LOW.
Options- A. True
- B. False Discuss
- 3. Parallel load means to load all flip-flops at the same time.
Options- A. True
- B. False Discuss
- 4. The 74194 4-bit bidirectional universal shift register has a wide range of applications.
Options- A. True
- B. False Discuss
- 5. When
is LOW, the data are shifted one bit per clock pulse.
Options- A. True
- B. False Discuss
- 6. A type of shift register that requires access to the Q outputs of all stages is ________.
Options- A. parallel in/serial out
- B. serial in/parallel out
- C. serial in/serial out
- D. a bidirectional shift register Discuss
- 7. A Johnson counter, constructed with N flip-flops, has how many unique states?
Options- A. N
- B. 2N
- C. 2N
- D. N2 Discuss
- 8. Assume a LOW logic level is placed on the SHIFT/LOAD input of a 74195 shift register. The output will change ________.
Options- A. immediately
- B. if the CLOCK is also LOW
- C. on the next clock leading edge
- D. depending on the J and K inputs Discuss
- 9. A 4-bit ring counter is loaded with a single 1. The frequency of any given output is ________.
Options- A. the same as the clock
- B. twice the clock frequency
- C. one-half the clock frequency
- D. one-fourth the clock frequency Discuss
- 10. Assume a 4-bit Johnson counter is initially cleared. After the first clock pulse the output is 0001. After the next clock pulse the output will be ________.
Options- A. 0011
- B. 0010
- C. 1000
- D. 0110 Discuss
Shift Registers problems
Search Results
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: serial in/parallel out
Correct Answer: 2N
Correct Answer: on the next clock leading edge
Correct Answer: one-fourth the clock frequency
Correct Answer: 0011
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