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

OR

You are given two circuits (a) and (b) as shown in the figures, which consist of NAND gates. Identify the logic operation carried out by the two. Write the truth tables for each. Identify the gates equivalent to the two circuits.

Truth table: -

The gate equivalent to this circuit is AND gate.

OR

Truth table:

Logic operation : Y = = A.B

Equivalent gate: AND gate

Truth table:

Logic operation : Y = = = A + B

Equivalent gate: OR gate