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- Question
A 4-bit binary up counter has an input clock frequency of 20 kHz. The frequency of the most significant bit is ________.
Options- A. 1.25 kHz
- B. 2.50 kHz
- C. 160 kHz
- D. 320 kHz
- Correct Answer
- 1.25 kHz
- 1. Shift-register counters use ________, which means that the output of the last FF in the register is connected back to the first FF in some way.
Options- A. MOD
- B. feedback
- C. strobing
- D. switchbacks Discuss
- 2. A glitch that appears on the decoded output of a ripple counter is often difficult to see on an oscilloscope because ________.
Options- A. it is a random event
- B. it occurs less frequently than the normal decoded output
- C. it is very fast
- D. all of the above Discuss
- 3. A reliable method for eliminating decoder spikes is the technique called ________.
Options- A. strobing
- B. feeding
- C. wagging
- D. waving Discuss
- 4. Assume a 4-bit ripple counter has a failure in the second flip-flop such that it "locks up." The third and fourth stages will ________.
Options- A. continue to count with correct outputs
- B. continue to count but have incorrect outputs
- C. stop counting
- D. turn into molten silicon Discuss
- 5. Asynchronous counters are often called ________ counters.
Options- A. toggle
- B. ripple
- C. binary
- D. flip-flop Discuss
- 6. The given circuit is a(n) ________.
Options- A. three-bit synchronous binary counter
- B. eight-bit asynchronous binary flip-flop
- C. two-bit asynchronous binary counter
- D. four-bit asynchronous binary counter Discuss
- 7. The MOD-10 counter is also referred to as a ________ counter.
Options- A. decade
- B. strobing
- C. BCD
- D. circuit Discuss
- 8. In order to use a shift register as a counter, ________.
Options- A. the register's serial input is the counter input and the serial output is the counter output
- B. the parallel inputs provide the input signal and the output signal is taken from the serial data output
- C. serial in/serial out register must be used
- D. the serial output of the register is connected back to the serial input of the register Discuss
- 9. ________ counters are often used whenever pulses are to be counted and the results displayed in decimal.
Options- A. Synchronous
- B. Bean
- C. Decade
- D. BCD Discuss
- 10. Exclusive-AND gates are needed for conversions between Gray code and binary code.
Options- A. True
- B. False Discuss
Counters problems
Search Results
Correct Answer: feedback
Correct Answer: all of the above
Correct Answer: strobing
Correct Answer: stop counting
Correct Answer: ripple
Correct Answer: four-bit asynchronous binary counter
Correct Answer: decade
Correct Answer: the serial output of the register is connected back to the serial input of the register
Correct Answer: BCD
Correct Answer: False
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