Question

What the circuit represents from the equivalent circuit?

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

Answer 1

The correct option is D NOR gate

Output of NOR gate

$y^{\prime }=\overline{A+B}$

Output of NAND gate

$y^{\prime \prime }=\overline{(A+B).(A+B)}$

$=\overline{(A+B)}\overline{(A+B)}$

$=(A+B)(A+B)$

$A+B$

Output of NOT gate

$y""=\overline{A+B}$

$\therefore$ The Boolean expression is for NOR gate.