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Digital ElectronicsBoolean Algebra

According to De Morgan’s theorem, the complement of A·B is?

  • AA̅·B̅
  • BA̅ + B̅
  • CA + B
  • DA·B̅
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Correct Answer: B. A̅ + B̅
Explanation: De Morgan's theorem gives (A·B)̅ = A̅ + B̅.
Reference: De Morgan's theorem
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