ISRO Computer Science (CSE) 2009 - Question 39

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A processor that has carry, overflow and sign flag bits... addition of 01001101 and 11101001... status of flags?

  • A. 1, 1, 0
  • B. 1, 0, 0
  • C. 0, 1, 0
  • D. 1, 0, 1

Answer: B. 1, 0, 0

Explanation: 77 + (-23) = 54. 01001101 + 11101001 = 1 00110110. Carry=1. Sign=0. Overflow=0 (Pos+Neg never overflows).

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