Saturday, 1 December 2012

Building Blocks of Computer:Multiplexer


By on 01:08

Multiplexer is a circuit that produce one output from many inputs or in simple words Many to One.Multiplexer(MUX) is also called a Data Selector(because in this circuit the output units are depend on input unit).



Now I discuss the example of MUX,

1)2:1 MUX or 2 to 1 MUX


Functional Table:-



S(0) y(var.)
0 I(0)
1 I(1)

Logic Circuit:-





2)4:1 MUX or 4 to 1 MUX


Functional Table:-



S(0) S(1) S(2)
0 0 I(0)
0 1 I(1)
1 0 I(2)
1 1 I(3)

Logic Circuit:-




3)8:1 MUX or 8 to 1 MUX

Functional Table:-


S(2) S(1) S(0) y(var.)
0 0 0 I(0)
0 0 1 I(1)
0 1 0 I(2)
0 1 1 I(3)
1 0 0 I(4)
1 0 1 I(5)
1 1 0 I(6)
1 1 1 I(7)

Logic Circuit:-





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