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  • Question
  • An octal-to-binary encoder has eight data inputs and encodes an output of ________ bits.


  • Options
  • A. two
  • B. three
  • C. four
  • D. five

  • Correct Answer
  • three 


  • MSI Logic Circuits problems


    Search Results


    • 1. A(n) ________ has a number of input lines, only one of which is activated at a given time, and produces on N-bit output code, depending on which input is activated.

    • Options
    • A. encoder
    • B. code converter
    • C. demultiplexer
    • D. decoder
    • Discuss
    • 2. The device that places its input data onto one of several outputs is a ________.

    • Options
    • A. demultiplexer
    • B. multiplexer
    • C. comparator
    • D. counter
    • Discuss
    • 3. The binary value of the BCD number 1000 0001 (81) is ________.

    • Options
    • A. 0101 0001
    • B. 0110 0011
    • C. 0100 0001
    • D. 1000 0000
    • Discuss
    • 4. Another name for a multiplexer is ________.

    • Options
    • A. encoder
    • B. decoder
    • C. code converter
    • D. data selector
    • Discuss
    • 5. If by chance more than one of the inputs in an HDL encoder is activated at the same time, the priority encoder ________.

    • Options
    • A. enters a fault mode
    • B. ignores the least significant input
    • C. resamples the data
    • D. finds some other input
    • Discuss
    • 6. A 75154 1-of-16 decoder has 16 outputs and decodes an input of ________ bits.

    • Options
    • A. two
    • B. three
    • C. four
    • D. six
    • Discuss
    • 7. The device that generates a coded output from a single active numeric input line is ________.

    • Options
    • A. a decoder
    • B. a multiplexer
    • C. a comparator
    • D. an encoder
    • Discuss
    • 8. A series RC circuit can be used to generate a power-up (automatic) reset signal.

    • Options
    • A. True
    • B. False
    • Discuss
    • 9. A Schmitt trigger has a positive feedback circuit and experiences a phenomenon called hysteresis.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. TTL requires a constant supply voltage of 8.0 V.

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


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