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Question 20251
JEE Physics · Medium

Semiconductors: De Morgan's Second Theorem MCQ

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De Morgan's Second TheoremMediumQuestion 20251

Question

De Morgan's second theorem states:
  1. A
    (AB)̄ = Ā · B̄
  2. B
    (AB)̄ = Ā + B̄
    Correct
  3. C
    (A+B)̄ = Ā + B̄
  4. D
    (A+B)̄ = Ā · B̄

Correct answer

(AB)̄ = Ā + B̄

Explanation

Second: complement of AND = OR of complements: NOT(A AND B) = (NOT A) OR (NOT B). A NAND gate equals NOR with inverted inputs. Used to convert between NAND/NOR implementations.

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