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Home ‣ Electronics ‣ Flip-Flops and Timers Comments
  • Question

  • J-K flip-flops are often used as switch debouncers.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Flip-Flops and Timers problems

    Search Results

    • 1. When the S and the R inputs are both HIGH the output of an S-R NOR latch will be unpredictable.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A D-type flip-flop is constructed by connecting an inverter between the Set and Clock terminals.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A one-shot is a special type of multivibrator, which must be triggered to produce each output pulse.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. The 555 timer can be used in either the bistable mode or the monostable mode.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Edge-triggered flip-flops can be identified by the triangle on the clock input.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The J-K flip-flop eliminates the RACE state when both the J and K inputs are HIGH.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Edge-triggered flip-flops must have _________.

    • Options
    • A. very fast response times
    • B. at least two inputs to handle rising and falling edges
    • C. a positive-transition pulse generator
    • D. a negative-transition pulse generator
      • Discuss
    • 8. The S-R, D-type, and J-K flip-flops are all examples of _________________.

    • Options
    • A. astable multivibrators
    • B. bistable multivibrators
    • C. monostable multivibrators
    • D. tristable multivibrators
      • Discuss
    • 9. A retriggerable one-shot has a pulse width of 10 ms; 3 ms after being triggered, another trigger pulse is applied. The resulting output pulse will be _________ ms.

    • Options
    • A. 3
    • B. 7
    • C. 10
    • D. 13
      • Discuss
    • 10. An S-R NAND latch with both of its inputs LOW has an output that is _____________.

    • Options
    • A. unpredictable
    • B. floating
    • C. HIGH
    • D. LOW
      • Discuss

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