Question

A gate has the following truth table.

P 1 1 0 0

Q 1 0 1 0

R 1 0 0 0

The gate is

• A. NOR
• B. OR
• C. NAND
• D. AND

Answer 1

Answer: (D)

AND

Answer 2

The Boolean expression for ‘AND’ gate is $R = P.Q$

⇒1.1 = 1, 1.0 = 0, 0.1 = 0, 0.0 = 0