Question

The two input MUX would have ____________

(a) 1 select line

(b) 2 select lines

(c) 4 select lines

(d) 3 select lines

I got this question by my school teacher while I was bunking the class.

My question comes from Multiplexers (Data Selectors) topic in portion Combinational Circuits of Digital Circuits

Answer 1

The correct choice is (a) 1 select line

Explanation: The two input multiplexer would have n select lines in 2^n. Thus n =1. Therefore, it has 1 select line.