1.

A 2-bit flash Analog to Digital Converter (ADC) is given below. The input is \(0 \le {V_{IN}} \le \;3\) Volts. The expression for the LSB of the output \({B_0}\) as a Boolean function of \({X_2},\;{X_1},\) and \({X_0}\) is

A. \({X_0}\left[ {\overline {{X_2} \oplus {X_1}} } \right]\)
B. \(\overline {{X_0}} \left[ {\overline {{X_2} \oplus {X_1}} } \right]\)
C. \({X_0}\left[ {{X_2} \oplus {X_1}} \right]\)
D. \({\bar X_0}\left[ {{X_2} \oplus {X_1}} \right]\)
Answer» B. \(\overline {{X_0}} \left[ {\overline {{X_2} \oplus {X_1}} } \right]\)


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