Question

In the combination of the following gates the output Y can be written in terms of inputs A and B as.

• A. $\overline{A\cdot B}+A\cdot B$
• B. $\overline{A\cdot B}$
• C. $\overline{A+B}$
• D. $A\cdot \overline{B}+\overline{A}\cdot B$

Answer 1

The correct option is D $A\cdot \overline{B}+\overline{A}\cdot B$

Out put of AND gates are $A\cdot \overline{B}$ and $\overline{A}\cdot B$. Hence output of NOR gate will be $A\cdot \overline{B}$ + $\overline{A}\cdot B.$