PRASHNIKAप्रश्निका
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Choose the correct option.

The expression at (3) is:

Computer Science20221 markMCQ
  • (i)$A + B \cdot C'$
  • (ii)$((A + B)' \cdot C)'$
  • (iii)$((A + B) \cdot C)'$
  • (iv)$(A + B) \cdot C$
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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: (iii)

Answer: (iii) $((A + B) \cdot C)'$ The AND gate (2) gives $(A+B) \cdot C$; the NOT gate makes point (3) its complement.
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From ISC 2022 Computer Science - Specimen paper (Semester 1), Paper 1, question 24(b).