Question
You are given a circuit below. Write its truth table. Hence, identify the logic operation carried out by this circuit. Draw the logic symbol of the gate it corresponds to.

Answer

A B $\text{X} =\overline{\text{A}}$ $\text{Y} = \overline{\text{B}}$ $\text{Z}=\overline{\bar{\text{A}}+\bar{\text{B}}}=\text{A}\cdot\text{B}$
0 0 1 1 1
0 1 1 0 0
1 0 0 1 0
1 1 0 0 0
Logic operation is AND or (A.B)
Logic Symbol

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