alleryStart learning →A multiplexer (MUX) with n select lines can route which number of inputs to a single output?
A2^n inputs (one selected at a time)
Bn inputs (one per select bit)
Cn+1 inputs always
D2·n inputs always
Answer & Solution
Correct answer: A. 2^n inputs (one selected at a time)
n select lines address 2^n input lines.
4-to-1 MUX uses 2 selects
8-to-1 uses 3. Can be cascaded for larger widths.
Functional building block in datapath design.
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