logo

CuriousTab

CuriousTab

Discussion


Home Electronics Flip-Flops and Timers Comments

  • Question
  • 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

  • Correct Answer
  • a positive-transition pulse generator 


  • Flip-Flops and Timers problems


    Search Results


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

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

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. 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
    • 4. A D-type flip-flop is constructed by connecting an inverter between the Set and Clock terminals.

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

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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


    Comments

    There are no comments.

Enter a new Comment