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  • Question
  • The output of an OR gate is LOW when ________.


  • Options
  • A. all inputs are LOW
  • B. any input is LOW
  • C. any input is HIGH
  • D. all inputs are HIGH

  • Correct Answer
  • all inputs are LOW 


  • Digital Concepts problems


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    • 1. In a certain digital waveform, the period is four times the pulse width. The duty cycle is ________.

    • Options
    • A. 0%
    • B. 25%
    • C. 50%
    • D. 100%
    • Discuss
    • 2. Convert the fractional binary number 10010.0100 to decimal.

    • Options
    • A. 24.50
    • B. 18.25
    • C. 18.40
    • D. 16.25
    • Discuss
    • 3. How many binary bits are necessary to represent 748 different numbers?

    • Options
    • A. 9
    • B. 7
    • C. 10
    • D. 8
    • Discuss
    • 4. Give the decimal value of binary 10010.

    • Options
    • A. 610
    • B. 910
    • C. 1810
    • D. 2010
    • Discuss
    • 5. A classification of ICs with complexities of 100 to 10,000 equivalent gates per chip is known as ________.

    • Options
    • A. SSI
    • B. MSI
    • C. LSI
    • D. VLSI
    • Discuss
    • 6. Serial format means digital signals are:

    • Options
    • A. sent over many conductors simultaneously.
    • B. sent over one conductor sequentially.
    • C. sent in groups of eight signals.
    • D. sent in binary coded decimal.
    • Discuss
    • 7. What kind of logic device or circuit is used to store information?

    • Options
    • A. Counter
    • B. Register
    • C. Inverter
    • D. Buffer
    • Discuss
    • 8. The generic array logic (GAL) device is ________.

    • Options
    • A. one-time programmable
    • B. reprogrammable
    • C. a CMOS device
    • D. reprogrammable and a CMOS device
    • Discuss
    • 9. A multiplexer has ________.

    • Options
    • A. one input and several outputs
    • B. one input and one output
    • C. several inputs and several outputs
    • D. several inputs and one output
    • Discuss
    • 10. Parallel format means that:

    • Options
    • A. each digital signal has its own conductor.
    • B. several digital signals are sent on each conductor.
    • C. both binary and hexadecimal can be used.
    • D. no clock is needed.
    • Discuss


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