Question

A truth table is given below. Which of the following has this type of truth table

A 0 1 0 1

B 0 0 1 1

y 1 0 0 0

• A. XOR gate
• B. NOR gate
• C. AND gate
• D. OR gate

Answer 1

Answer: (B)

NOR gate

Answer 2

In ‘NOR’ gate $Y = \overline{A + B}$

i.e. $\overline{0 + 0} = \overline{0} = 1$, $\overline{1 + 0} = \overline{1} = 0$

$\overline{0 + 1} = \overline{1} = 0$, $\overline{1 + 1} = \overline{1} = 0$