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Digital ElectronicsBoolean Algebra

According to De Morgan’s theorem, the complement of (A + B) is?

  • AA complement + B complement
  • BA complement · B complement
  • CA · B
  • DA + B
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Correct Answer: B. A complement · B complement
Explanation: De Morgan's theorem gives complement(A + B) = complement(A) · complement(B).
Reference: Standard digital electronics: De Morgan's theorem
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