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Home ‣ Digital Electronics ‣ Combinational Logic Analysis Comments
  • Question

  • A 4-variable AND-OR circuit produces a 1 at its Y output. Which combination of inputs is correct?


  • Options
  • A. A = 0, B = 0, C = 0, D = 0
  • B. A = 0, B = 1, C = 1, D = 0
  • C. A = 1, B = 1, C = 0, D = 0
  • D. A = 1, B = 0, C = 0, D = 0

  • Correct Answer
  • A = 1, B = 1, C = 0, D = 0 

    • Combinational Logic Analysis problems

    Search Results

    • 1. The Boolean SOP expression obtained from the truth table below is ________.


    • Options
    • A.
    • B.
    • C.
    • D. None of these
      • Discuss
    • 2. Referring to the GAL diagram, which is the correct logic function?


    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. A logic circuit with an output consists of ________.

    • Options
    • A. two AND gates, two OR gates, two inverters
    • B. three AND gates, two OR gates, one inverter
    • C. two AND gates, one OR gate, two inverters
    • D. two AND gates, one OR gate
      • Discuss
    • 4. A 4-variable AND-OR-Invert circuit produces a 0 at its Y output. Which combination of inputs is correct?

    • Options
    • A.
    • B.
    • C.
    • D. none of the above
      • Discuss
    • 5. Before an SOP implementation, the expression would require a total of how many gates?

    • Options
    • A. 1
    • B. 2
    • C. 4
    • D. 5
      • Discuss
    • 6. The output of an exclusive-NOR gate is 1. Which input combination is correct?

    • Options
    • A. A = 1, B = 0
    • B. A = 0, B = 1
    • C. A = 0, B = 0
    • D. none of the above
      • Discuss
    • 7. The inverter can be produced with how many NAND gates?

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 8. The 8-input XOR circuit shown has an output of Y = 1. Which input combination below (ordered A ? H) is correct?


    • Options
    • A. 10111100
    • B. 10111000
    • C. 11100111
    • D. 00011101
      • Discuss
    • 9. The following waveform pattern is for a(n) ________.


    • Options
    • A. 2-input AND gate
    • B. 2-input OR gate
    • C. Exclusive-OR gate
    • D. None of the above
      • Discuss
    • 10. One positive pulse with tw = 75 µs is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with tw = 15 µs is applied to the other input beginning 20 µs after the leading edge of the first pulse. Which statement describes the output in relation to the inputs?

    • Options
    • A. The exclusive-OR output is a 20 µs pulse followed by a 40 µs pulse, with a separation of 15 µs between the pulses.
    • B. The exclusive-OR output is a 20 µs pulse followed by a 15 µs pulse, with a separation of 40 µs between the pulses.
    • C. The exclusive-OR output is a 15 µs pulse followed by a 40 µs pulse.
    • D. *The exclusive-OR output is a 20 µs pulse followed by a 15 µs pulse, followed by a 40 µs pulse.
      • Discuss

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