Question

Which logic gate is represented by the following combination of logic gates?

• A. AND
• B. NOR
• C. OR
• D. NAND

Answer 1

Answer: (A)

This is a case of AND gate. Input and output are shown below
$\therefore y=\overline{\overline{A}+\overline{B}}=\overline{\overline{A}\cdot \overline{B}}=AB(\text{ since }\overline{A}+\overline{B}=\overline{A}\cdot \overline{B})$