Additional Notes
Multiplexers and demultiplexers have many applications. The process of data selection and data routing have already been shown. Another important application is in parallel-to-serial conversion and in serial-to-parallel conversion. A multiplexer can be used to convert parallel data to serial data. the parallel data is applied to the data inputs and a binary count sequencer is connected to the control inputs. This means that the inputs will appear on the output one-at-a-time and in numerical sequence. Thus the parallel data will be applied to the output serially. The inverse (serial-to-parallel) can be accomplished with a demultiplexer.
