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Home ‣ Digital Electronics ‣ Digital System Projects Using HDL See What Others Are Saying!
  • Question

  • The frequency counter measures frequency by enabling a counter to count the number of pulses of the incoming waveform during a precisely specified period of time called the sampling time.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • More questions

    • 1. A positive edge-triggered flip-flop will accept inputs only when the clock ________.

    • Options
    • A. is LOW
    • B. changes from HIGH to LOW
    • C. is HIGH
    • D. changes from LOW to HIGH
      • Discuss
    • 2. The high input impedance of MOSFETs:

    • Options
    • A. allows faster switching
    • B. reduces input current and power dissipation
    • C. prevents dense packing
    • D. creates low-noise reactions
      • Discuss
    • 3. Which of the following is an example of a counter with a truncated modulus?

    • Options
    • A. 8
    • B. 13
    • C. 16
    • D. 32
      • Discuss
    • 4. Bidirectional means having two states.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. The NAND gate is an example of combinational logic.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. An OR gate with schematic "bubbles" on its inputs performs the same functions as a(n)________ gate.

    • Options
    • A. NOR
    • B. OR
    • C. NOT
    • D. NAND
      • Discuss
    • 7. The S-R flip-flop has no invalid or unused state.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. In the digital clock project, when it is 11:59:59, AND gate 1 detects that the tens of hours is 1 and the enable input is active. On the next clock pulse the AM/PM flip-flop will ________.

    • Options
    • A. set
    • B. reset
    • C. toggle
    • D. clear
      • Discuss
    • 9. Implementing the expression using NAND logic, we get:


    • Options
    • A. (A)
    • B. (B)
    • C. (C)
    • D. (D)
      • Discuss
    • 10. One characteristic of a ring counter is that the modulus is equal to the number of flip-flops in the register and, consequently, there are never any unused or invalid states.

    • Options
    • A. True
    • B. False
      • Discuss

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