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Home Digital Electronics Digital System Projects Using HDL Comments

  • Question
  • In the keypad encoder, the ________ activate(s) the freeze bit only when one column is low.


  • Options
  • A. NAND columns
  • B. CASE structure
  • C. freeze function
  • D. BCD counter

  • Correct Answer
  • CASE structure 


  • Digital System Projects Using HDL problems


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

    • Options
    • A. 1 pps
    • B. 60 pps
    • C. 100 pps
    • D. 600 pps
    • Discuss
    • 2. Using one case construct inside another is known as ________.

    • Options
    • A. doping
    • B. functioning
    • C. freezing
    • D. nesting
    • Discuss
    • 3. The timing and control block provides the ________ for the frequency counter.

    • Options
    • A. brains
    • B. BCD counters
    • C. display register
    • D. six different frequency measurement ranges
    • Discuss
    • 4. In the keypad encoder, the ring counter is implemented using ________ that responds to the clk input.

    • Options
    • A. SIGNAL
    • B. FUNCTION
    • C. CASE
    • D. PROCESS
    • Discuss
    • 5. The step rate of the simulation of a stepper motor is probably ________ the actual stepper motor.

    • Options
    • A. slower than
    • B. more than
    • C. almost the same as
    • D. exactly the same as
    • Discuss
    • 6. A very critical dimension in project management is ________.

    • Options
    • A. cost
    • B. skill
    • C. time
    • D. personnel
    • Discuss
    • 7. The interface of the stepper motor needs to operate in one of ________ mode(s).

    • Options
    • A. one
    • B. two
    • C. three
    • D. four
    • Discuss
    • 8. In the keypad encoder, just after the 4 ms mark, the simulation initiates the release of the key by changing the column value to ________, which causes the d output to go into its Hi-Z state.

    • Options
    • A. 0 hex
    • B. 4 hex
    • C. 8 hex
    • D. F hex
    • Discuss
    • 9. In the digital clock design, the hours section is different from the seconds and minutes section in that it never goes to ________.

    • Options
    • A. the 0 state
    • B. 13
    • C. the ring counter
    • D. the BCD counter
    • Discuss
    • 10. One aspect of project planning and management is the selection of ________ that will best fit the application.

    • Options
    • A. hardware platform
    • B. software
    • C. personnel
    • D. time
    • Discuss


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