In the circuit shown below Q1 has negligible collector-to-emitter saturation voltage and the diode drops negligible voltage across it under forward bias. If Vcc is +5 V, X and Y are digital signals with 0 V as logic 0 and Vcc as logic 1, the Boolean expression for Z is
A. $${\text{XY}}$$
B. $$\overline {\text{X}} {\text{Y}}$$
C. $${\text{X}}\overline {\text{Y}} $$
D. $$\overline {{\text{XY}}} $$
Answer: Option B
This Question Belongs to Electronics And Communications Engineering >> Digital Electronics
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