What are applications of multiplexers?

A multiplexing design can be used for a wide variety of applications.

Computers:

Networking, FireWire, USB, SATA, E-SATA, SPDIF, S-Vid, All utilizes different forms of multiplexing in order to carry a lot of information on very few wires. This makes connecting of these devices very easy.

Stereo systems:

CD-Players utilizes multiplexing in order to transfer data/music digitally to a digital input.

Multiplexing of digital signals ensures less to no loss of quality in the transfer.

Amplifiers with digital output. Any sound system with digital output utilizes multiplexing. This makes it easily possible to carry 6 channels of sound in only one fiber cable.

General:

Multiplexing is often utilized over large distances. It may be of interest to measure the temperature 6 kilometers (4 miles) down into an oil drill hole or other. Temperature can easily be converted into an electrical voltage but this voltage will be changing on its way up to surface due to capacitive loads and interference. The result may give a very wrong readout of temperature. By multiplexing signal, we can transfer digital data instead. Digital data are then interpreted via a de-multiplexer and we get an accurate result every time.

Speed of multiplexing decreases over distance. The farther away, the slower speed.

uses of a multiplexer correctly

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