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ECE :: Microprocessors

  1. Which of the following is not treated as hexadecimal constant by assembler in 8085?

  2. A.
    45 H
    B.
    6 AFH
    C.
    234
    D.
    64 H

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  3. If CS = A15 A14 A13 is used as chip select logic of a 4 K RAM in 8085 system, its memory range is

  4. A.
    3000 H - 3 FFF H
    B.
    7000 H - 7 FFFH
    C.
    5000 H - 5 FFF H and 6000 H - 6 FFF H
    D.
    6000 H - 6 FFF H and 7000 H - 7 FFF H

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  5. Consider the following part of a C program float a, b
    b = (a > 4 ? 2 : 9);

    Assuming that a has values of 3 and 6, the values stored respectively will be

  6. A.
    2 and 9
    B.
    2.0 and 9.0
    C.
    2.0 and 2.0
    D.
    9.0 and 2.0

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  7. Consider the following operation in a computer

    1. Multiplication of scalar
    2. Iversion of matrix
    3. Printing a line of 120 characters on a printer
    Which of the above is a subroutine?

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

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  9. The addressing mode depicted in the given figure is

  10. A.
    direct
    B.
    register
    C.
    register indirect
    D.
    implicit

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  11. IC 7485 cannot be cascaded.

  12. A.
    True
    B.
    False

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  13. An I/O processor controls the flow of information between

  14. A.
    cache memory and I/O devices
    B.
    main memory and I/O devices
    C.
    two I/O devices
    D.
    cache and main memory

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  15. MS Access is a DBMS software.

  16. A.
    True
    B.
    False

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  17. When .9432 E - 4 is subtracted from .5452 E - 3 in normalized floating point mode

  18. A.
    none of the numbers is changed
    B.
    .9432 E - 4 is changed to .09432 E - 3 and .5452 E - 3 is not changed
    C.
    .5452 E - 3 is changed to 5.452 E - 4 but .9432 E - 4 is not changed
    D.
    both Ihe numbers are changed and their exponents are, made equal to -5

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  19. DS directive in 8085

  20. A.
    forces the assembler to reserve one byte of memory
    B.
    forces the assembler to reserve a specified number of bytes in the memory
    C.
    forces the assembler to reserve a specified number of consecutive bytes in the memory
    D.
    none of the above

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