Question

The outputs of two NOT gates are fed to a NOR gate. Draw the logic circuit of the combination of gates. Give its truth table. Identify the gate represented by this combination.

Answer 1

Output from A from NOT gate = $\overline{A}$

Output from B from NOT gate = $\overline{B}$

Output from NOR gate = $\overline{\overline{A}+\overline{B}}=A.B$
So, From above we can deduce that, the resultant is a AND gate.

A	B	Y=AB
0	0	0
0	1	0
1	0	0
1	1	1