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  • Question

  • Which of the figures given below represents a NAND gate?

    Which of the figures given below represents a NAND gate? a b c d


  • Options
  • A. a
  • B. b
  • C. c
  • D. d

  • Correct Answer
  • a 

    • Describing Logic Circuits problems

    Search Results

    • 1. Which timing diagram shown below is correct for an inverter?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
      • Discuss
    • 2. Simplify the expression using DeMorgan's theorems.

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. For a 3-input NAND gate, with the input waveforms as shown below, which output waveform is correct?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
      • Discuss
    • 4. Which of the figures given below represents a NOR gate?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
      • Discuss
    • 5. For a three-input OR gate, with the input waveforms as shown below, which output waveform is correct?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
      • Discuss
    • 6. Which logic gate does this truth table describe?


    • Options
    • A. AND
    • B. OR
    • C. NAND
    • D. NOR
      • Discuss
    • 7. Which of the examples below expresses the distributive law?

    • Options
    • A. (A + B) + C = A + (B + C)
    • B. A(B + C) = AB + AC
    • C. A + (B + C) = AB + AC
    • D. A(BC) = (AB) + C
      • Discuss
    • 8. A small circle on the output of a logic gate is used to represent the:

    • Options
    • A. Comparator operation.
    • B. OR operation.
    • C. NOT operation.
    • D. AND operation.
      • Discuss
    • 9. Which statement below best describes a Karnaugh map?

    • Options
    • A. A Karnaugh map can be used to replace Boolean rules.
    • B. The Karnaugh map eliminates the need for using NAND and NOR gates.
    • C. Variable complements can be eliminated by using Karnaugh maps.
    • D. Karnaugh maps provide a visual approach to simplifying Boolean expressions.
      • Discuss
    • 10. The binary numbers A = 1100 and B = 1001 are applied to the inputs of a comparator. What are the output levels?

    • Options
    • A. A > B = 1, A < B = 0, A < B = 1
    • B. A > B = 0, A < B = 1, A = B = 0
    • C. A > B = 1, A < B = 0, A = B = 0
    • D. A > B = 0, A < B = 1, A = B = 1
      • Discuss

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