The Boolean expression `P+bar(P)Q`, where P and Q are the inputs of the logic circuit, represents

Options

A. AND gate
B. NAND gate
C. NOT gate
D. OR gate

Answer

D

Explanation

We draw a truth table for the expression `P+bar(P).Q` as given below
`|{:(P,Q,bar(P),bar(P).Q,P+bar(P.Q)),(0,0,1,0,0),(0,1,1,1,1),(1,0,0,0,1),(1,1,0,0,1):}:|`
We note that output is `1` when either of the input is `1`. Thus the logic circuit works as OR gate.