The logic evaluated by the circuit at the output is [Figure description: A two-input logic circuit with inputs X and Y. Two NOT gates (inverter triangles) are placed on the input lines. The top AND gate takes X and the inverted Y; the bottom AND gate takes Y and the inverted X (cross-coupled inverted inputs). The outputs of the two AND gates feed a 2-input OR gate whose output is labelled OUTPUT.]
- A. XȲ + YX̄
- B. X̄Ȳ + XY
- C. (X̄+Ȳ)XY
- D. X̄Y + XȲ + X + Y
Answer: A. XȲ + YX̄
Explanation: Output = X·Ȳ + X̄·Y, the XOR function.