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ECE :: Microprocessors

  1. What is the time required to refresh a typical DRAM(Dynamic RAM)
  2. A.
    2-4 μs
    B.
    2-4 ns
    C.
    2-4 ms
    D.
    2-4 ps

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  3. ______ number of address lines required to address a memory of size 32 K
  4. A.
    14 lines
    B.
    15 lines
    C.
    16 lines
    D.
    18 lines

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  5. The Conversion of the +1000 decimal number into signed binary word is _______
  6. A.
    0000 1111 0000 1111
    B.
    1111 0000 1111 0000
    C.
    1000 0011 1110 1000
    D.
    0111 1100 0001 1000

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  7. 8085 microprocessor is a ____ device
  8. A.
    PMOS
    B.
    CMOS
    C.
    NMOS
    D.
    QMOS

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  9. Which of the following register deals with sequencing the execution of instructions
  10. A.
    Stack Pointer
    B.
    Program Counter
    C.
    Accumulator
    D.
    Flag

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  11. Which of the following flag is used in 8086 for string manipulation instructions
  12. A.
    DF
    B.
    AF
    C.
    OF
    D.
    PF

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  13. How many segment registers are present in 8086 micro processor?
  14. A.
    3
    B.
    5
    C.
    4
    D.
    2

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  15. Which of the following prefix is used in 8086 machine language that simplifies the use of string primitives with loops
  16. A.
    REP
    B.
    LOOPS
    C.
    LODS
    D.
    MOVS

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  17. In Stack , data storage is designed in ________ method
  18. A.
    First in first out
    B.
    last in last out
    C.
    last in first out
    D.
    first in last out

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  19. Which of the following register will be automatically incremented by LODSB instruction
  20. A.
    DI
    B.
    SI
    C.
    DS
    D.
    ES

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