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MCQs

Total Questions : 275 | Page 2 of 28 pages
Question 11. In 8086 the number of bytes which can be addressed directly is about
  1.    1000
  2.    10000
  3.    100000
  4.    one million
 Discuss Question
Answer: Option D. -> one million
Question 12. Which of the following pair of gates can form a latch?
  1.    A pair of cross coupled OR
  2.    A pair of cross copled AND
  3.    A pair of cross coupled NAND
  4.    A cross coupled NAND/OR
 Discuss Question
Answer: Option C. -> A pair of cross coupled NAND
Question 13. In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 14. Assertion (A): Each memory chip has its own address latch.
Reason (R): ALE signal comes out of microprocessor 8085 and goes to memory chip.
  1.    Both A and R are correct and R is correct explanation of A
  2.    Both A and R are correct but R is not correct explanation of A
  3.    A is correct R is wrong
  4.    A is wrong R is correct
 Discuss Question
Answer: Option D. -> A is wrong R is correct
Question 15. When the write enable input is not asserted, the gated D latch _________ its output.
  1.    Can not change
  2.    Clears
  3.    Sets
  4.    Complements
 Discuss Question
Answer: Option A. -> Can not change
Question 16. For a memory with a 16-bit address space, the addressability is
  1.    16 bits
  2.    8 bits
  3.    2^16 bits
  4.    Cannot be determined
 Discuss Question
Answer: Option D. -> Cannot be determined
Question 17. Which of the following is a valid integer constant?
  1.    127
  2.    127.0
  3.    127
  4.    125 + 3
 Discuss Question
Answer: Option C. -> 127
Question 18. In 8085
  1.    P flag is set when the result has even parity
  2.    P flag is set when the result has odd parity
  3.    P flag is reset when the result has odd parity
  4.    P flag is reset when the result has even parity
 Discuss Question
Answer: Option A. -> P flag is set when the result has even parity
Question 19. In 8085 which addressing mode is also called inherent addressing?
  1.    Direct
  2.    Register
  3.    Implicit
  4.    Immediate
 Discuss Question
Answer: Option C. -> Implicit
Question 20. Internet is a worldwide network of computers where most of the information is freely available.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True

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