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

  • 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

  • Correct Answer
  • unpredictable 

    • Flip-Flops and Timers problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. The J-K flip-flop eliminates the RACE state when both the J and K inputs are HIGH.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. J-K flip-flops are often used as switch debouncers.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. If an input is activated by a signal transition, it is _____________.

    • Options
    • A. edge-triggered
    • B. toggle-triggered
    • C. clock-triggered
    • D. noise-triggered
      • Discuss
    • 7. The toggle condition in a master-slave J-K flip-flop means that Q and will switch to their ________ state(s) at the _____________________.

    • Options
    • A. inverted, positive clock edge
    • B. quiescent, negative clock edge
    • C. opposite, active clock edge
    • D. reset, synchronous clock edge
      • Discuss
    • 8. An S-R flip-flop can be triggered by ______, ______, or ________.

    • Options
    • A. HIGHs, LOWs, PRESETs
    • B. edges, levels, pulses
    • C. HIGHs, LOWs, CLEARs
    • D. SETs, RESETs, HIGHs
      • Discuss
    • 9. Pulse-triggered flip-flops are also called _________ flip-flops.

    • Options
    • A. master-slave
    • B. postponed
    • C. level
    • D. edge
      • Discuss
    • 10. One example of the use of an S-R flip-flop is as a(n) _________.

    • Options
    • A. racer
    • B. binary storage register
    • C. astable oscillator
    • D. transition pulse generator
      • Discuss

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