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How many select lines are needed to realise an 8 : 1 multiplexer?
Question

How many select lines are needed to realise an 8 : 1 multiplexer?

A.

1

B.

2

C.

3

D.

4

Correct option is C


An 8 × 1 multiplexer selects one of the 8 inputs and presents it to the output, i.e. So the number of select lines will be 3

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