Correct Answer - Option 3 : 2
Concept:
The number of selection line is n for n bit resistor in multiplexer:
No. selection line in MUX = log2 n
In the destination decoder,
No. of selection line = log2 n
Analysis:
Given:
Mux is 4 x 1
So, n = 4
No. of the selection line in MUX = log2n
No. of the selection line in decoder = log2 4 = 2 bit
Option (3) is the correct choice.
More information about MUX:
1) It is a data selector combinational circuit.
2) It is many to-one, parallel to serial convertor
3) It is also called universal logic circuit
4) MUX contain AND gate followed by OR gate
