Advanced Microprocessors

Advanced Microprocessors

Easy Questions

Microprocessor

8085 Microprocessors
Advanced Microprocessors
  1. A 3-stage walkingar creeping counter is given below:

    How many states does this counter pass through before repeating? What is the modulo?








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    As we don't know the value of Q = 1 or 0, so there can be 2 possible sequence.

    Hence, modulo cannot be determined unless other information regarding initial value of Q given.

    Correct Option: D

    As we don't know the value of Q = 1 or 0, so there can be 2 possible sequence.

    Hence, modulo cannot be determined unless other information regarding initial value of Q given.

  1. The widely used code in data communication is








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    NA

    Correct Option: B

    NA

  1. The logic realized by circuit shown in figure below is—









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    In 4 × 1 MUX, A and B as select line, the truth table is

    Output = F = I0 – S1 – S2 + I1 – S2 S1
    F=I0 – S1 – S2 + I1 – S1 S2 + I2 – S1 S2 + I3 S1S2
    = C – A – B + C – A B + – C A – B + – C A B
    = C – A (B + – B) + – C A (– B + B)
    = C – A + – C A
    = C ⊕ A

    Correct Option: B

    In 4 × 1 MUX, A and B as select line, the truth table is

    Output = F = I0 – S1 – S2 + I1 – S2 S1
    F=I0 – S1 – S2 + I1 – S1 S2 + I2 – S1 S2 + I3 S1S2
    = C – A – B + C – A B + – C A – B + – C A B
    = C – A (B + – B) + – C A (– B + B)
    = C – A + – C A
    = C ⊕ A

  1. For the logic ckt circuit below, the output Y is equal to—










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    Y = A + C + B + AC
    = A (C + 1) + C + B
    = A + B + C

    Correct Option: B


    Y = A + C + B + AC
    = A (C + 1) + C + B
    = A + B + C

  1. How many 1's are present in the binary representation of—
    3 × 512 + 7 × 64 + 5 × 8 + 3?








  1. View Hint View Answer Discuss in Forum

    3 × (8)3 + 7 × (8)2 + 5 × 81 + 3 × 8º means 512, 64, 8 and 1 can be written as power of 8. The proceeding number is translatable to an octal number (3 7 5 3)8 = (011 111 101 011)2 Number of 1 = 9. Hence alternative (B) is the correct answer.

    Correct Option: B

    3 × (8)3 + 7 × (8)2 + 5 × 81 + 3 × 8º means 512, 64, 8 and 1 can be written as power of 8. The proceeding number is translatable to an octal number (3 7 5 3)8 = (011 111 101 011)2 Number of 1 = 9. Hence alternative (B) is the correct answer.