Semiconducting Devices Question 79

Question: What will be the input of A and B for the Boolean expression (A+B)(AB)=1

[TNPCEE 2002]

Options:

A) 0, 0

B) 0, 1

C) 1, 0

D) 1, 1

Show Answer

Answer:

Correct Answer: A

Solution:

The given Boolean expression can be written as Y=(A+B).(A.B)=(A¯.B¯).(A¯+B¯)=(A¯A¯).B¯+A¯(B¯.B¯)

=A¯.B¯+A¯B¯=A¯B¯

A B Y
0 0 1
1 0 0
0 1 0
1 1 0


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