(i) Identify the logic gates marked P and Q in the given logic circuit Fig. (ii) Write down the output at X for the inputs `A=0, B=0` and `A=1, B=1`.
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Logic gate P is NOT gate and logic gate Q is OR gate. The Boolean expression for this gate is `X=barA+B` The truth table for the given values of A and B of the above circuit is shown below. `|{:(A,barA,B,y=barA+B),(0,1,0,1),(1,0,1,1):}|`
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