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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

  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

  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

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

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

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

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

  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

  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

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