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  • Question

  • 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

  • Correct Answer
  • False 

    • MSI Logic Circuits problems

    Search Results

    • 1. In order to select data input I1 of a 74151 eight-line multiplexer, the select inputs must be:

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The outputs of the 74138 octal decoder are enabled when the enable inputs are
      .

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The 74139 dual four-line demultiplexer functions as a demultiplexer if data input is on the line.

    • 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
      • Discuss
    • 5. 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
    • 6. Incandescent 7-segment displays are especially well suited for use in portable battery-operated devices.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. 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
    • 8. In HDL, the operation of the DEMUX is exactly described using a ________.

    • Options
    • A. function
    • B. process
    • C. variable type
    • D. number of conditional signal assignment statements
      • Discuss
    • 9. When an application, such as an encoder, calls for a unique response from a circuit corresponding to a combination of its input variables, the two methods that best serve this purpose are the ________ and the ________.

    • Options
    • A. CASE construct, truth TABLE
    • B. if then statement, elsif statement
    • C. VARIABLE, PROCESS
    • D. FUNCTION, TYPE
      • Discuss
    • 10. A typical AHDL comparator follows an algorithm described as ________.

    • Options
    • A. FUNCTION constructs
    • B. CASE constructs
    • C. IF/ELSE constructs
    • D. PROCESS constructs
      • Discuss

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