Advanced Microprocessors

Advanced Microprocessors

Easy Questions

Microprocessor

8085 Microprocessors
Advanced Microprocessors
  1. The logic circuit given below converts a binary code Y1 Y2 Y3 into—








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    By Forming truth table we get

    From the input and output table we see that outputs are in the form of gray code.
    For example: Binary 0 0 0 → gray code 0 0 0 (first bit as it then add according to arrow shown)
    0 1 1→ gray code 0 1 0 etc.
    Hence alternative (B) is the correct answer.

    Correct Option: B

    By Forming truth table we get

    From the input and output table we see that outputs are in the form of gray code.
    For example: Binary 0 0 0 → gray code 0 0 0 (first bit as it then add according to arrow shown)
    0 1 1→ gray code 0 1 0 etc.
    Hence alternative (B) is the correct answer.

  1. The number of switching function of 3 variables is—








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    The number of switching function of 3 variables.

    Also 23 = 8 States

    Correct Option: A

    The number of switching function of 3 variables.

    Also 23 = 8 States

  1. The gate whose output is Low if and only if all the inputs are High is—








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    Truth Table of NAND Gate

    Correct Option: A

    Truth Table of NAND Gate

  1. A carry look ahead adder is frequently used for addition because it—








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    It is faster as carry is generated in parallel at all stages of addition rather than sequentially as in ripple adders.

    Correct Option: A

    It is faster as carry is generated in parallel at all stages of addition rather than sequentially as in ripple adders.

  1. Positive logic in a logic circuit is one in which—








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    NA

    Correct Option: D

    NA