Multiplexers are used to transfer many signals over one line, and several control lines. You put it at the end of a circuit if you plan to send the output from that circuit to another circuit, so you use the least lines possible.
Control circuit.
24-to1mux circuit
combinational circuit
Which has more number of input, It can be obtained by cascading two or more multiplexer with less nunber of inputs.
multiplexer
multiplexer can be used as parallel to serial converter.
The multiplexer collected data from the terminal and sent it to the distant end, with the address of the receiving terminal minimizing idle times between transactions
MUX(A, B, S) = A*S + B*S' NOT(A) = MUX(0, 1, A) = 0*A + 1*A' = A' From http://noyesno.net/
A demultiplexer is a circuit. It has one input but more than one output. A demultiplexer gives binary information from one end to another. It is used to connect a single source to many destinations.
Multiplexor
Multiplexor
Statistical multiplexer does not reserve time slots or frequencies. Instead, it dynamically allocates bandwidth only when it is needed.