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Home ‣ Digital Electronics ‣ Combinational Logic Circuits Comments
  • Question

  • In HDL, LITERALS is/are:


  • Options
  • A. digital systems.
  • B. scalars.
  • C. binary coded decimals.
  • D. a numbering system.

  • Correct Answer
  • scalars. 

    • Combinational Logic Circuits problems

    Search Results

    • 1. The implementation of simplified sum-of-products expressions may be easily implemented into actual logic circuits using all universal ________ gates with little or no increase in circuit complexity. (Select the response for the blank space that will BEST make the statement true.)

    • Options
    • A. AND/OR
    • B. NAND
    • C. NOR
    • D. OR/AND
      • Discuss
    • 2. Which gate is best used as a basic comparator?

    • Options
    • A. NOR
    • B. OR
    • C. Exclusive-OR
    • D. AND
      • Discuss
    • 3. Which of the following expressions is in the sum-of-products form?

    • Options
    • A. (A + B)(C + D)
    • B. (AB)(CD)
    • C. AB(CD)
    • D. AB + CD
      • Discuss
    • 4. A certain BCD-to-decimal decoder has active-HIGH inputs and active-LOW outputs. Which output goes LOW when the inputs are 1001?

    • Options
    • A. 0
    • B. 3
    • C. 9
    • D. None. All outputs are HIGH.
      • Discuss
    • 5. Each "1" entry in a K-map square represents:

    • Options
    • A. a HIGH for each input truth table condition that produces a HIGH output.
    • B. a HIGH output on the truth table for all LOW input combinations.
    • C. a LOW output for all possible HIGH input conditions.
    • D. a DON'T CARE condition for all possible input truth table combinations.
      • Discuss
    • 6. The simplest equation which implements the K-map shown below is:


    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. For a two-input XNOR gate, with the input waveforms as shown below, which output waveform is correct?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
      • Discuss
    • 8. Which of the K-maps given below represents the expression X = AC + BC + B?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
      • Discuss
    • 9. Which of the following logic expressions represents the logic diagram shown?


    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. Based on the indications of probe A in the figure given below, what is wrong, if anything, with the circuit?


    • Options
    • A. The logic probe is unable to determine the state of the circuit at that point and is blinking to alert the technician to the problem.
    • B. The output appears to be shorted to Vcc, but is being pulsed by the pulser.
    • C. The output appears to be LOW, but is being pulsed by the pulser.
    • D. Nothing appears to be wrong at that point.
      • Discuss

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