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Microprocessors - Section 9
Microprocessors - Section 10
Microprocessors - Section 11
Microprocessors - Section 12
Microprocessors - Section-13

  1. Which of the following is a valid integer constant?

    2. A.
    127
    B.
    127.0
    C.
    127
    D.
    125 + 3

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  2. The five flags in 8085 are designated as

    3. A.
    Z, CY, S, P and AC
    B.
    D, Z, S, P, AC
    C.
    Z, C, S, P, AC
    D.
    Z, CY, S, D, AC

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  3. It is desired to evaluate the expression
    F = B cos Y + C cos2 Y + A cos3 Y
     The Pascal equivalent to ensure minimum computer time should be written as

    4. A.
    F = B * COS (Y) + C * SQR (COS (Y) + A * COS (Y) * COS (Y) * COS (Y)
    B.
    F = B * COS (Y) + C * SQR [COS (Y)] + A * COS (Y) * SQR [COS (Y)]
    C.
    F = B * COS (Y) + C * COS(Y) * COS (Y) + A * COS (Y) * COS (Y) * COS (Y)
    D.
    X = COS(Y)
    Z = SQR (X)
    F = B * X + C * Z + A * X * Z

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  4. In 8085 which addressing mode is also called inherent addressing?

    5. A.
    Direct
    B.
    Register
    C.
    Implicit
    D.
    Immediate

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  5. Consider the following statements for 8085

    1. The most significant 8 bits of address are transmitted on the 8 lines on which data is transmitted.
    2. Eight pins are dedicated to transmit the most significant 8 bits of memory address.
    3. The least significant 8 bits of address are transmitted on the lines on which data is transmitted.
    4. The data and leass significant 8 bits are transmitted at different points in time.
    Which of the above statements are correct?

    6. A.
    all
    B.
    1, 2 and 3 only
    C.
    2, 3 and 4 only
    D.
    1, 3 and 4 only

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  6. It is possible to copy a file in the same directory.

    7. A.
    True
    B.
    False

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  7. In Java which operator can be used even if there is a single operand

    8. A.
    +
    B.
    -
    C.
    *
    D.
    %

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  8. Consider the series

    Which of the following is true for above series?

    9. A.
    B.
    C.
    D.
    None of these

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  9. Read the following statements about 8085

    1. RAL instruction rotates ACC contents left by 1 bit
    2. When RAL instruction is executed once the binary number gets doubled
    3. STC means set CY to 1
    Which of the above statements are correct?

    10. A.
    1 and 2 only
    B.
    1, 2 and 3 only
    C.
    1, 2 and 4 only
    D.
    1 and 4 only

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  10. In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU.

    11. A.
    True
    B.
    False

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