Question

A logic circuit provides the output Y as per the following truth table:

A	B	Y
0	0	1
0	1	0
1	0	1
1	1	0

The expression for the output Y is:

Options

• `bar B`

• B

• `A.B + bar A`

• `A. bar B + bar A`

Answer 1

`bb(bar B)`

Explanation:

The truth table clearly indicates that output (Y) is just the complement of B, i.e., output Y is B. So, the expression for the output Y is `bar B`.