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Home ‣ Digital Electronics ‣ Flip-Flops Comments
  • Question

  • ICs can perform sequential operations, including counting and data shifting.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • Flip-Flops problems

    Search Results

    • 1. A positive edge-triggered flip-flop changes states with a HIGH-to-LOW transition on the clock input.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. Some flip-flops have invalid states.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. When the output of the NOR gate S-R flip-flop is and , the inputs are .

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. Inputs that cause the output of a flip-flop to change instantaneously are asynchronous.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Generally, a flip-flop's hold time is short enough so that its output will go to a state determined by the logic levels present at its synchronous control inputs just prior to the active clock transition.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. It takes four flip-flops to act as a divide-by-4 frequency divider.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. An astable multivibrator is sometimes referred to as a clock.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The 7476 and 74LS76 are both dual flip-flops.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. An input which can only be accepted when an enable or trigger is present is called asynchronous.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The key to edge-triggered sequential circuits in VHDL is the ________.

    • Options
    • A. ARCHITECTURE
    • B. PROCESS
    • C. FUNCTION
    • D. VARIABLE
      • Discuss

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