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ECE :: Microprocessors

Microprocessors - Section 1
Microprocessors - Section 2
Microprocessors - Section 3
Microprocessors - Section 4
Microprocessors - Section 5
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. Most of the memory chips in static RAM

    2. A.
    do not require any supply
    B.
    need 2 V supply
    C.
    need 5 V supply
    D.
    need 12 V supply

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  2. The interface chip for 8086 and 16 bit ADC is

    3. A.
    8259
    B.
    8255
    C.
    8253
    D.
    8251

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  3. Which of the following real variable names is not valid in Fortran?

    4. A.
    BETA
    B.
    ALPHA
    C.
    A
    D.
    AB * 2

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  4. Temporary register in 8085 is a 16 bit register.

    5. A.
    True
    B.
    False

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  5. In which computer language is 'break' statement used

    6. A.
    Fortran 77
    B.
    Pascal
    C.
    C
    D.
    none of the above

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  6. In a microprocessor

    7. A.
    all instructions need only one machine cycle
    B.
    some instructions need only one machine cycle while some other instructions need more than one machine cycle
    C.
    all instructions need only fraction of one machine cycle
    D.
    some instructions need less than one machine cycle

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  7. Assertion (A): If source and destination addresses are made implicit the length of instruction is reduced.

    Reason (R): 8085 has only 3 addressing modes.

    8. 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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  8. Assertion (A): Microprocessor 8085 has on-chip oscillator with inbuilt crystal.

    Reason (R): For frequency stability crystal oscillator is preferred.

    9. 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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  9. Consider the following program in Pascal

    X = 2.57
    X = (X + 0.06) * 10
    I = TRUNC (X)
    X = I
    X = X / 10.0

     The final value of X would be

    10. A.
    2
    B.
    2.6
    C.
    2.63
    D.
    26.3

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  10. Consider the following

    1. The first letter of a Java variable is lower case.
    2. Each successive word in Java variable begins with a capital letter.
    3. All other letters are lower case.
    4. A Java variable can have a digit as first character.
    Which of the above are correct?

    11. A.
    All
    B.
    1, 2, 3 only
    C.
    1, 2, 4 only
    D.
    2, 3, 4 only

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