Q.

How many select lines would be required for an 8- line-to-1-line multiplexer?

A. 2
B. 4
C. 8
D. 3
Answer» D. 3
Explanation: 2n input lines, n control lines and 1 output line available for mux. here, 8 input lines mean 23 inputs. so, 3 control lines are possible.
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