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Home ‣ Digital Electronics ‣ Digital System Projects Using HDL Comments
  • Question

  • In the digital clock project, the 60 Hz signal is sent through a Schmitt-trigger circuit to produce sine wave pulses at the rate of 60 pps.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Digital System Projects Using HDL problems

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    • 1. In the digital clock project HDL, the 1 pps signal is used as a synchronous clock for all of the counters' stages, which are synchronously cascaded.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A frequency counter is a circuit that can measure and display the frequency of a signal.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. In the frequency counter, the pulse width of the enable signal is very critical for taking an accurate frequency measurement.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A ________ is a testing and troubleshooting tool that generates a short-duration pulse when manually activated, usually by depressing a push button.

    • Options
    • A. cattle prod
    • B. jimmy rod
    • C. logic pulser
    • D. bilateral switch
      • Discuss
    • 5. Propagation delay is important because ________.

    • Options
    • A. the logic gates must be given a short break during each clock cycle or else they will overheat
    • B. it limits the maximum operating frequency of a gate
    • C. it is a measure of how long the clock must be applied to the gate before it will make the required decision
    • D. all the gates in a system must have the same propagation times in order to be compatible
      • Discuss
    • 6. One CASE construct inside another CASE construct is called a do-loop.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. In HDL when a circuit is simulated on a computer, the designer must create all the different scenarios that will be experienced by the actual circuit and must also know the proper response to those inputs.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The wave-drive sequence of a stepper motor has more torque and operates more smoothly than the full-step sequence at moderate speeds.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. One of the first steps in any HDL project is to define its scope by naming each input and output.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. In HDL, one of the strategies used in strategic planning is to find a way to test each piece of the project.

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

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