Question

The following figure shows the combination of logic gates.


This combination is equivalent to

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

Answer 1

The correct option is B OR gate

By de Morgan’s law
$Y=\overline{\overline{A}.\overline{B}}$
$Y=\overline{\overline{A}}+\overline{\overline{B}}$
$Y=A+B$