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MSI Logic Circuits problems

  • 1. A device that determines which of two numbers is greater is a comparator.

  • Options
  • A. True
  • B. False
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  • 2. All outputs of the 74138 octal decoder are disabled (HIGH) when the enable inputs are:
    Digital Electronics MSI Logic Circuits: All outputs of the 74138 octal decoder are disabled (HIGH) when the enable inputs are:

  • Options
  • A. True
  • B. False
    • Discuss
  • 3. Output 3 of a 74138 octal decoder is selected when it is enabled by a data input of:
    A0 = 1
    A1 = 1
    A2 = 0

  • Options
  • A. True
  • B. False
    • Discuss
  • 4. A four-line multiplexer must have as inputs four data inputs and two select inputs.

  • Options
  • A. True
  • B. False
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  • 5. The 74139 dual four-line demultiplexer functions as a demultiplexer if data input is on the Digital Electronics MSI Logic Circuits: The 74139 dual four-line demultiplexer functions as a demultiplexer if data input is on the line.

  • Options
  • A. True
  • B. False
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  • 6. The outputs of the 74138 octal decoder are enabled when the enable inputs are
    Digital Electronics MSI Logic Circuits: The outputs of the 74138 octal decoder are enabled when the enable inputs are.

  • Options
  • A. True
  • B. False
    • Discuss
  • 7. In order to select data input I1 of a 74151 eight-line multiplexer, the select inputs must be:
    Digital Electronics MSI Logic Circuits: In order to select data input I1 of a 74151 eight-line multiplexer, the select inp

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  • A. True
  • B. False
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  • 8. When data input I5 of a 74148 octal-to-binary encoder is active, the data output is:
    A0 = 1
    A1 = 0
    A2 = 0

  • Options
  • A. True
  • B. False
    • Discuss
  • 9. Incandescent 7-segment displays are especially well suited for use in portable battery-operated devices.

  • Options
  • A. True
  • B. False
    • Discuss
  • 10. When data input I4 of a 74148 octal-to-binary encoder is active, the data output is:
    A0 = 1
    A1 = 1
    A2 = 0

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

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