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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 not an interrupt line in 8085?

    2. A.
    TRAP
    B.
    RST 5.5
    C.
    RST 7.5
    D.
    RST 9.5

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  2. In 8085, F register has 8 bits.

    3. A.
    True
    B.
    False

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  3. The general purpose register code for accumulator in 8085 is

    4. A.
    111
    B.
    000
    C.
    001
    D.
    1111

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  4. Which of the following is not an internal DOS command?

    5. A.
    VER
    B.
    COPY
    C.
    MEM
    D.
    DATE

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  5. In 8085, high level on INTR line can be recognised only if

    6. A.
    TRAP and RST lines are high
    B.
    TRAP and RST lines are not high
    C.
    TRAP line is high but not RST line
    D.
    RST line is high but not TRAP line

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  6. The word size accessible at a time from the memory subsystem depends on

    7. A.
    width of data bus
    B.
    width of address bus
    C.
    width of control bus
    D.
    both (b) and (c)

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  7. In windows the middle button of mouse is not used.

    8. A.
    True
    B.
    False

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  8. Microprocessor 8088 has

    9. A.
    16 bit registers and 16 bit data bus
    B.
    8 bit registers and 8 bit data bus
    C.
    8 bit registers and 16 bit data bus
    D.
    16 bit registers and 8 bit data bus

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  9. Assertion (A): In 8085, P flag is for parity checking.

    Reason (R): If the result of ALU has even parity, P flag is set and if the result has odd parity, P flag is reset.

    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. Which of the following is not a special purpose peripheral?

    11. A.
    Programmable DMA controller
    B.
    Programmable Floppy disc controller
    C.
    Programmable Hard disc controller
    D.
    Programmable CRT controller

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