PRASHNIKAप्रश्निका
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Choose the correct option.

The expression at (1) is:

Computer Science20221 markMCQ
  • (i)$A \cdot B$
  • (ii)$A' + B'$
  • (iii)$A + B'$
  • (iv)$A + B$
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Logic diagram: inputs A and B go to an OR gate whose output is marked (1); (1) and input C go to an AND gate whose output is marked (2); (2) goes through a NOT gate whose output is marked (3); (3) and (1) go to a final OR gate whose output is F(A,B,C).

Answer

Answer

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Correct option: (iv)

Answer: (iv) $A + B$ Point (1) is the output of the first OR gate with inputs A and B.
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From ISC 2022 Computer Science - Specimen paper (Semester 1), Paper 1, question 24(a).