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Home Digital Electronics Digital System Projects Using HDL Comments

  • Question
  • 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

  • Correct Answer
  • PROCESS 


  • Digital System Projects Using HDL problems


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    • 1. 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
    • 2. One of the first steps in small-project management is to determine ________.

    • Options
    • A. how many devices are controlled by the outputs
    • B. a way to test each block
    • C. if each block fits together
    • D. how each block works
    • Discuss
    • 3. VARIABLES are considered to be updated ________ within a sequence of statements in a PROCESS, whereas SIGNALS referred to in a PROCESS are updated when the PROCESS ________.

    • Options
    • A. once, starts
    • B. immediately, suspends
    • C. twice, ends
    • D. never, starts
    • Discuss
    • 4. In the stepper motor, the half-step sequence is used when ________.

    • Options
    • A. less torque is needed
    • B. larger steps are desired
    • C. smaller steps are desirable
    • D. more torque is needed
    • Discuss
    • 5. 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
    • 6. 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
    • 7. Using one case construct inside another is known as ________.

    • Options
    • A. doping
    • B. functioning
    • C. freezing
    • D. nesting
    • Discuss
    • 8. 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
    • 9. 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
    • Discuss
    • 10. A very critical dimension in project management is ________.

    • Options
    • A. cost
    • B. skill
    • C. time
    • D. personnel
    • Discuss


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