Question

The logic gate represented in given figure is

• A. OR Gate
• B. NOT Gate
• C. NAND Gate
• D. XOR Gate

Answer 1

Answer: (A)

OR Gate

$P$ is the output of the inputs signal $A$ and $B$ operating on a $NOR$ gate. Then the signal $P$ (A' and B') acts as input signal for the second $NOR$ gate to give the output $Y$.

Thus writing truth table for each step gives the table as shown above which resembles the truth table of an $OR$ gate for input signal $A$ and $B$ whereas the $Y$ as the output signal.