Physics - Semiconductors Question with Solution | TestHub

The given logic circuit consists of a NOR gate followed by a NOT gate.

The first gate is a NOR gate with inputs $A$ and $B$. Its output is given by $\overline{A+B}$.

This output is then fed as an input to the second gate, which is a NOT gate. The NOT gate inverts its input.

Therefore, the final output $Y$ is:

$Y=\overline{\overline{A+B}}$

According to the involution law of Boolean algebra, the double complement of a variable is the variable itself ($\overline{\overline{X}}=X$).

$Y=A+B$

The Boolean expression $A+B$ represents an OR gate.

Answer: OR, A+B