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Home Digital Electronics Logic Gates Comments

  • Question
  • Which of the following choices meets the minimum requirement needed to create specialized waveforms that are used in digital control and sequencing circuits?


  • Options
  • A. basic gates, a clock oscillator, and a repetitive waveform generator
  • B. basic gates, a clock oscillator, and a Johnson shift counter
  • C. basic gates, a clock oscillator, and a DeMorgan pulse generator
  • D. basic gates, a clock oscillator, a repetitive waveform generator, and a Johnson shift counter

  • Correct Answer
  • basic gates, a clock oscillator, and a repetitive waveform generator 


  • Logic Gates problems


    Search Results


    • 1. CMOS IC packages are available in ________.

    • Options
    • A. DIP configuration
    • B. SOIC configuration
    • C. DIP and SOIC configurations
    • D. neither DIP nor SOIC configurations
    • Discuss
    • 2. One advantage TTL has over CMOS is that TTL is ________.

    • Options
    • A. less expensive
    • B. not sensitive to electrostatic discharge
    • C. faster
    • D. more widely available
    • Discuss
    • 3. The output of an exclusive-NOR gate is HIGH if ________.

    • Options
    • A. the inputs are equal
    • B. one input is HIGH, and the other input is LOW
    • C. the inputs are unequal
    • D. none of the above
    • Discuss
    • 4. The output of an exclusive-OR gate is HIGH if ________.

    • Options
    • A. all inputs are LOW
    • B. all inputs are HIGH
    • C. the inputs are unequal
    • D. none of the above
    • Discuss
    • 5. From the truth table for a three-input NOR gate, what is the only condition of inputs A, B, and C that will make the output X high?

    • Options
    • A. A = 1, B = 1, C = 1
    • B. A = 1, B = 0, C = 0
    • C. A = 0, B = 0, C = 1
    • D. A = 0, B = 0, C = 0
    • Discuss
    • 6. A device used to display one or more digital signals so that they can be compared to expected timing diagrams for the signals is a:

    • Options
    • A. DMM
    • B. spectrum analyzer
    • C. logic analyzer
    • D. frequency counter
    • Discuss
    • 7. What does the small bubble on the output of the NAND gate logic symbol mean?

    • Options
    • A. open collector output
    • B. tristate
    • C. The output is inverted.
    • D. none of the above
    • Discuss
    • 8. Which of the following gates is described by the expression ?

    • Options
    • A. OR
    • B. AND
    • C. NOR
    • D. NAND
    • Discuss
    • 9. The logic gate that will have HIGH or "1" at its output when any one (or more) of its inputs is HIGH is a(n):

    • Options
    • A. OR gate
    • B. AND gate
    • C. NOR gate
    • D. NOT operation
    • Discuss
    • 10. How many entries would a truth table for a four-input NAND gate have?

    • Options
    • A. 2
    • B. 8
    • C. 16
    • D. 32
    • Discuss


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