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ECE :: Microprocessors

Microprocessors - Section 1
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Microprocessors - Section 3
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Microprocessors - Section 6
Microprocessors - Section 7
Microprocessors - Section 8
Microprocessors - Section 9
Microprocessors - Section 10
Microprocessors - Section 11
Microprocessors - Section 12
Microprocessors - Section-13

  1. Which of the following is a valid logical expression in Pascal?

    2. A.
    2.5 : = A
    B.
    (A + B) < < (C + D)
    C.
    A = < B
    D.
    A > = B

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  2. In a typical microcomputer data transfer takes place between

    3. A.
    μP and memory
    B.
    μP and I/O devices
    C.
    memory and I/O devices
    D.
    all of the above

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  3. In 8085 the pins for + 5 V input and ground are

    4. A.
    20 and 40 respectively
    B.
    40 and 20 respectively
    C.
    1 and 2 respectively
    D.
    1 and 1 respectively

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  4. The normalised form of 1.81 x 10-11 is

    5. A.
    18.1 x 10-12
    B.
    18.1 x 10-13
    C.
    0.181 x 10-10
    D.
    0.0181 x 10-9

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  5. 'Burst refresh' in DRAM is also called

    6. A.
    Concentrated refresh
    B.
    Distributed refresh
    C.
    Hidden refresh
    D.
    None of the above

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  6. The number of interrupt lines in 8085 is

    7. A.
    2
    B.
    3
    C.
    4
    D.
    5

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  7. If KMT = 100, LITRES = 5.0, PCOST = 28.0 and OPCOST = 70.0 what will be the result of the following FORTRAN 77 program?

    INTEGER KMT
    REAL LITRES, PCOST, OPCOST, PKCOST READ *, KMT,
    LITRES, PCOST, OPCOST, PKCOST
    KMPL = KMT/LITRES PKCOST = (PCOST * LITRES + OPCOST)/ KMT

    8. A.
    2
    B.
    2.10
    C.
    21
    D.
    21.0

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  8. A real number consists of

    9. A.
    integer part
    B.
    integer part and fraction part
    C.
    integer part, fraction part along with positive or negative sign
    D.
    none of the above

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  9. Assertion (A): Negative values of incremental operator in DO loop are allowed in Fortran 77 but not in earlier versions of Fortran.

    Reason (R): Fortran 77 has better array facilities than earlier versions of Fortran.

    10. A.
    Both A and R are correct and R is correct explanation of A
    B.
    Both A and R are correct but R is not correct explanation of A
    C.
    A is correct R is wrong
    D.
    A is wrong R is correct

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  10. In FORTRAN 77 the correct way to write mathematical expression is be

    11. A.
    A / (B * C) - D ** 2
    B.
    A / B - C - D ** 2
    C.
    A / BC - D ** 2
    D.
    none of the above

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