hi,
can someone tell me about multiplexers. esp i want to know about 8 to 1 multiplexer, its output boolean function

 

A digital multiplexer allows you to select between several inputs.
An 8 to 1 MUX uses 3 selection inputs to allow a selection between [000] (or logic 0), and [111] (or logic 7). The three select inputs A, B, and C are gated with the 8 data input lines, D0 through D7 such that only the line that corresponds to the selected input is passed out. Therefore the boolean truth table for the 8 to 1 MUX is:

C B A OUT
0 0 0 D0
0 0 1 D1
0 1 0 D2
0 1 1 D3
1 0 0 D4
1 0 1 D5
1 1 0 D6
1 1 1 D7

 

hi bobo,
thnx very much
my best
arvind