how does rotary switch use the working principle of a multiplexer?

 

Is this a homework question?

So what is the working principle of a multiplexer?

 

A multiplexer is an electronic device that selects from several input signals and transmits one or more output signals. In its simplest form, a multiplexer will have two signal inputs, one control input and one output.

 

A multiplexer is an electronic device that selects from several input signals and transmits one or more output signals. In its simplest form, a multiplexer will have two signal inputs, one control input and one output.

So how/what does a simple rotary switch work/do? How would that emulate the mux function you just described.