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ECE :: Microprocessors

  1. Internet is a worldwide network of computers where most of the information is freely available.

  2. A.
    True
    B.
    False

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  3. A 37 bit mantissa has an accuracy of

  4. A.
    6 decimal places
    B.
    8 decimal places
    C.
    10 decimal places
    D.
    11 decimal places

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  5. In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is

  6. A.
    assignment, relational, arithmetic
    B.
    relational, assignment, arithmetic
    C.
    arithmetic, assignment, relational
    D.
    arithmetic, relational, assignment

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  7. In 8085, the pins for SID and SOD are

  8. A.
    4 and 5 respectively
    B.
    5 and 4 respectively
    C.
    3 and 4 respectively
    D.
    4 and 3 respectively

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  9. Assertion (A): Each memory chip has its own address latch.

    Reason (R): ALE signal comes out of microprocessor 8085 and goes to memory chip.

  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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  11. Consider the statement

    20 X = A + B/C + D * Y

    Which of the following formulae does the above statement represent?

  12. A.
    B.
    C.
    D.
    None of the above

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  13. The number of categories in which registers are classified in μP are

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

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  15. In the expression b = 2.1 / 1.2 * 3.1 + 3 / 7.1 * 6 which operation would have the first priority in C?

  16. A.
    2.1 / 1.2
    B.
    1.2 * 3.1
    C.
    2.1 / 1.2 * 3.1
    D.
    3 / 7.1

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  17. Consider the instructions

    1. MOV M, B
    2. OUT 4
    3. LDAX
    Which of the above require memory write cycle?

  18. A.
    1, 2, 3
    B.
    1 and 2 only
    C.
    1 and 3 only
    D.
    2 and 3 only

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  19. Read the following statements about address space in microprocessors

    1. An address space is a set of all possible addresses which can be generated by a microprocessor.
    2. Each address in the address space allows a designer to provide at least one memory or I/O location in the system.
    3. Two types of address spaces are memory and I/O address space.
    4. Some micro processors have only one type of address space.
    Which of the above are correct?

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

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