Question

Following diagram performs the logic function of

• A. AND gate
• B. NAND gate
• C. OR gate
• D. XOR gate

Answer 1

Answer: (A)

$X=\overline{A\cdot B};Y=\overline{X}=\overline{\overline{A\cdot B}}=A\cdot B$
$\Rightarrow$ AND gate.