Question

A logic circuit with 3 gates and 2 inputs. The circuit will be read from the final output to the inputs.

The final AND gate has two inputs, the gate has output R.
The first input to the final AND gate is the output from an OR gate.
The OR gate has two inputs.
The first input to the OR gate is P.
The second input to the OR gate is Q.
The second input to the final AND gate is the output from a NOT gate.
The NOT gate has one input.
The input to the NOT gate is Q.
input signals:

P = 0 and Q = 1
R = __________-

Answer 1

R = 0

Step-by-step explanation:

The output R is the result of the function ...

R = (P+Q)·Q'

This simplifies to ...

R = PQ' + 0

R = PQ'

The result R will be the AND of P=0 and Q'=(1-1)=0. Any AND function with a 0 input will have a 0 output.

R = 0