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  • Question

  • What type of circuit is represented in the given figure, and which statement best describes its operation?

    What type of circuit is represented in the given figure, and which statement best describes its oper


  • Options
  • A. It is a tristate inverter. When the ENABLE input is HIGH, the output is effectively an open circuit?it is neither LOW nor HIGH.
  • B. It is a programmable inverter. It can be programmed to function as either an active LOW or an active HIGH inverter.
  • C. It is an active LOW buffer, which can be turned on and off by the ENABLE input.
  • D. None of the above.

  • Correct Answer
  • It is a tristate inverter. When the ENABLE input is HIGH, the output is effectively an open circuit?it is neither LOW nor HIGH. 

    • More questions

    • 1. A retriggerable one-shot has a pulse width of 10 ms; 3 ms after being triggered, another trigger pulse is applied. The resulting output pulse will be ________ mS.

    • Options
    • A. 3
    • B. 7
    • C. 10
    • D. 13
      • Discuss
    • 2. The device shown here is most likely a ________.


    • Options
    • A. comparator
    • B. multiplexer
    • C. demultiplexer
    • D. parity generator
      • Discuss
    • 3. The symbol shown below is for a 2-input NAND gate.


    • Options
    • A. True
    • B. False
      • Discuss
    • 4. In HDL, one of the strategies used in strategic planning is to find a way to test each piece of the project.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. A D latch has one data-input line.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Decimal 474 is ________ in BCD.

    • Options
    • A. 0100 0111 0100
    • B. 0100 1011 0101
    • C. 0100 1001 0011
    • D. 0110 1011 1001
      • Discuss
    • 7. Each hexadecimal digit converts to ________ binary digits.

    • Options
    • A. four
    • B. eight
    • C. 12
    • D. six
      • Discuss
    • 8. Determine the values of A, B, C, and D that make the product term equal to 1.

    • Options
    • A. A = 0, B = 1, C = 0, D = 1
    • B. A = 0, B = 0, C = 0, D = 1
    • C. A = 1, B = 1, C = 1, D = 1
    • D. A = 0, B = 0, C = 1, D = 0
      • Discuss
    • 9. Another name for a multiplexer is ________.

    • Options
    • A. encoder
    • B. decoder
    • C. code converter
    • D. data selector
      • Discuss
    • 10. All decade counters are BCD counters.

    • Options
    • A. True
    • B. False
      • Discuss

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