Digital Logic

1:

What is the Boolean expression for the following circuit?

or gate circuit

A.

F(A, B) = ( A + B' )' . ( B + A' )'

B.

F( A, B ) = 1 ( Tautology )

C.

F( A, B ) = ⊕ ( inconsistency)

D.

F ( A, B ) = A ⊕  B ( A exclusive OR'ed with B)

 

Answer : A

Explanation :

 Ans is  A as  input to 1st OR gate is A, and B' so output   of 1st OR gate is (A+B') In the same way output  for 2nd OR gate is (A'+B) So Final output will be (A+B')'. (A'+B)'

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Option: A

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