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Home ‣ Digital Electronics ‣ Combinational Logic Analysis Comments
  • Question

  • Assume that you have a 3-input NAND gate but need only a 2-input gate. The unused input should be ________.


  • Options
  • A. connected to ground
  • B. left open
  • C. connected to a HIGH
  • D. any of the above

  • Correct Answer
  • connected to a HIGH 

    • Combinational Logic Analysis problems

    Search Results

    • 1. The expression can be directly implemented using only ________.

    • Options
    • A. an XOR gate
    • B. an XNOR gate
    • C. an AOI circuit
    • D. three 2-input NAND gates
      • Discuss
    • 2. A gate can drive a number of load gate inputs up to its specified ________.

    • Options
    • A. supply voltage
    • B. noise margin
    • C. fan-in
    • D. fan-out
      • Discuss
    • 3. A VHDL component is a predefined logic function.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A NOR gate is a universal gate.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. The output of an AND gate is HIGH when any input is HIGH.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. If both inputs of a 2-input NOR gate are connected, the gate will function as an ________.

    • Options
    • A. OR gate
    • B. AND gate
    • C. inverter
    • D. any of the above
      • Discuss
    • 7. The symbol shown represents ________.


    • Options
    • A. AND-OR logic
    • B. AOI logic
    • C. XOR gate
    • D. XNOR gate
      • Discuss
    • 8. The symbol shown represents a(n) ________.


    • Options
    • A. AND gate
    • B. OR gate
    • C. NAND gate
    • D. NOR gate
      • Discuss
    • 9. Using the universal property of a NAND gate, one or more NAND gates can be used to replace an ________.

    • Options
    • A. OR gate
    • B. AND gate
    • C. inverter
    • D. any of the above
      • Discuss
    • 10. Assume you have A, B, C, and D available but not their complements. The minimum number of 2-input NAND gates required to implement the equation is ________.

    • Options
    • A. 3
    • B. 4
    • C. 5
    • D. 6
      • Discuss

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