Question

Which one of the following options is CORRECT for the given logic circuit? 

• A. P = 1, Q = 1; X = 0
• B. P = 1, Q = 0; X = 1
• C. P = 0, Q = 1; X = 0
• D. P = 0, Q = 0; X = 1

Hint:

For analyzing logic circuits, trace the signals step by step, considering each gate operation for the inputs given.

Answer 1

The Correct Option is D

In the given logic circuit, we have a combination of AND, OR, and NOT gates. By analyzing the given circuit: - First, calculate the output of the AND gate with inputs $P$ and $Q$.
- Then, pass the result through the NOT gate and calculate the final output for $X$.
When $P = 0$ and $Q = 0$, the AND gate output is $0$, and after passing through the NOT gate, we get $1$ for $X$. Therefore, the correct answer is (D).