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Question
In the circuit shown in the figure, identify the equivalent gate of the circuit and make its truth table.
Solution
`y_1 = overlineA and y_2 = overlineB`
`therefore Y = overline(Y_ +Y_2) = overline(Y_1.Y_2) =overlineA'.overlineB' = A.B`
The equivalent gate of the given circuit is AND gate.
Truth table:
| A | B | Y1 | Y2 | Y |
| 1 | 1 | 0 | 0 | 1 |
| 1 | 0 | 0 | 1 | 0 |
| 0 | 1 | 1 | 0 | 0 |
| 0 | 0 | 1 | 1 | 0 |
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