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  • Question

  • For a two-input XNOR gate, with the input waveforms as shown below, which output waveform is correct?

    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

  • Correct Answer
  • d 

    • Combinational Logic Circuits problems

    Search Results

    • 1. The simplest equation which implements the K-map shown below is:


    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. In HDL, LITERALS is/are:

    • Options
    • A. digital systems.
    • B. scalars.
    • C. binary coded decimals.
    • D. a numbering system.
      • Discuss
    • 3. 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
    • 4. Which gate is best used as a basic comparator?

    • Options
    • A. NOR
    • B. OR
    • C. Exclusive-OR
    • D. AND
      • Discuss
    • 5. 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
    • 6. Which of the K-maps given below represents the expression X = AC + BC + B?


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


    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. 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
    • 9. The device shown here is most likely a ________.


    • Options
    • A. comparator
    • B. multiplexer
    • C. demultiplexer
    • D. parity generator
      • Discuss
    • 10. How many 3-line-to-8-line decoders are required for a 1-of-32 decoder?

    • Options
    • A. 1
    • B. 2
    • C. 4
    • D. 8
      • Discuss

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