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MCQs

Total Questions : 275 | Page 28 of 28 pages
Question 271. How many machine cycles are required for execution of IN 30H instruction
  1.     4
  2.     5
  3.     3
  4.     6
 Discuss Question
Answer: Option C. ->  3
Question 272. Length of the instruction POP D is
  1.     3 byte
  2.     4 byte
  3.     1 byte
  4.     2 byte
 Discuss Question
Answer: Option C. ->  1 byte
Question 273. While INX B instruction execute,
  1.     only carry flag will be affected
  2.     only carry and zero flags will be affected
  3.     no flags will be affected
  4.     all flags will be affected
 Discuss Question
Answer: Option C. ->  no flags will be affected
Question 274. While STC instruction executes,
  1.     only carry flag will be affected.
  2.     only carry and zero flags will be affected.
  3.     all flags will be affected.
  4.     no flags will be affected.
 Discuss Question
Answer: Option A. ->  only carry flag will be affected.
Question 275. Which instruction is required to rotate the content of accumulator one bit right along with carry?
  1.     RRC
  2.     RLC
  3.     RAR
  4.     RAL
 Discuss Question
Answer: Option C. ->  RAR

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