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  • Question
  • How many truth table entries are necessary for a four-input circuit?


  • Options
  • A. 4
  • B. 8
  • C. 12
  • D. 16

  • Correct Answer
  • 16 


  • Logic Gates problems


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    • 1. How many NAND circuits are contained in a 7400 NAND IC?

    • Options
    • A. 1
    • B. 2
    • C. 4
    • D. 8
    • Discuss
    • 2. If a signal passing through a gate is inhibited by sending a low into one of the inputs, and the output is HIGH, the gate is a(n):

    • Options
    • A. AND
    • B. NAND
    • C. NOR
    • D. OR
    • Discuss
    • 3. When an input delta of 2 V produces a transconductance of 1.5 mS, what is the drain current delta?

    • Options
    • A. 666 mA
    • B. 3 mA
    • C. 0.75 mA
    • D. 0.5 mA
    • Discuss
    • 4. How will electrons flow through a p-channel JFET?

    • Options
    • A. from source to drain
    • B. from source to gate
    • C. from drain to gate
    • D. from drain to source
    • Discuss
    • 5. Junction Field Effect Transistors (JFET) contain how many diodes?

    • Options
    • A. 4
    • B. 3
    • C. 2
    • D. 1
    • Discuss
    • 6. A NAND gate has:

    • Options
    • A. LOW inputs and a LOW output
    • B. HIGH inputs and a HIGH output
    • C. LOW inputs and a HIGH output
    • D. None of the these
    • Discuss
    • 7. The basic logic gate whose output is the complement of the input is the:

    • Options
    • A. OR gate
    • B. AND gate
    • C. INVERTER gate
    • D. comparator
    • Discuss
    • 8. Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?

    • Options
    • A. OR gates only
    • B. AND gates and NOT gates
    • C. AND gates, OR gates, and NOT gates
    • D. OR gates and NOT gates
    • Discuss
    • 9. A single transistor can be used to build which of the following digital logic gates?

    • Options
    • A. AND gates
    • B. OR gates
    • C. NOT gates
    • D. NAND gates
    • Discuss
    • 10. The logic gate that will have HIGH or "1" at its output when any one of its inputs is HIGH is a(n):

    • Options
    • A. OR gate
    • B. AND gate
    • C. NOR gate
    • D. NOT gate
    • Discuss


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