ISRO Computer Science (CSE) 2008 - Question 26

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The logic operation of two combinational circuits in Figure-I and Figure-II are

  • A. entirely different
  • B. identical
  • C. complementary
  • D. dual

Answer: A. entirely different

Explanation: Figure I implements X' + Y'. Figure II is X'Y'. By De Morgan's, X' + Y' = (XY)'. They are not identical.

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