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


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  • A. True
  • B. False

  • Correct Answer
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    • Digital System Projects Using HDL problems

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    • 1. In the frequency counter, a pulse shaper block is needed to ensure that the unknown signal, whose frequency is to be measured, will be compatible with the clock input for the counter block.

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    • A. True
    • B. False
      • Discuss
    • 2. In the keypad HDL encoder, after releasing a key the ring counter resumes its counting sequence.

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    • A. True
    • B. False
      • Discuss
    • 3. In the digital clock project, when it is 11:59:59, AND gate 1 detects that the tens of hours is 1 and the edge trigger clock moves the display to 12:00:00.

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    • A. True
    • B. False
      • Discuss
    • 4. In the digital clock project, the ENT input and RCO output can be used for synchronous counter cascading.

    • Options
    • A. True
    • B. False
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    • 5. In the keypad HDL encoder, as long as all columns are high the ring counter is enabled and counting.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. The full-step sequence always has two coils of the stepper motor energized in any state of the sequence and typically causes 30° of shaft rotation per step.

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    • A. True
    • B. False
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    • 7. In the digital clock project, the AHDL block codes are connected using graphic design files.

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    • A. True
    • B. False
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    • 8. One of the first steps in any HDL project is to define its scope by knowing the nature of all the signals that are interconnected to pieces of the project.

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    • A. True
    • B. False
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    • 9. In the keypad HDL encoder, the data signal is used to combine the row and column encoder data to make a 4-bit value representing the key that was pressed.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. In the VHDL code of the stepper motor, the cout outputs are bit_vector type because they are binary bit patterns.

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    • A. True
    • B. False
      • Discuss

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