Multiplexer: Difference between revisions

[[File:Multiplexer2.svg|thumb|300px|Schematic of a 2-to-1 Multiplexer. It can be equated to a controlled switch.]]

[[File:Demultiplexer.png|thumb|270px|Schematic of a 1-to-2 Demultiplexer. Like a multiplexer, it can be equated to a controlled switch.]]

 

In [[electronics]], a '''multiplexer''' (or '''mux'''; spelled sometimes as '''multiplexor'''), also known as a '''data selector''', is a device that selects between several [[Analog signal|analog]] or [[Digital signal (electronics)|digital]] input signals and forwards the selected input to a single output line.<ref name="Network+ Guide to Networks">{{cite book | last = Dean | first = Tamara | title = Network+ Guide to Networks | publisher = Delmar | year = 2010 | pages = 82–85 | isbn = 978-1423902454 | url = https://books.google.com/books?id=UD0h_GqgbHgC&q=network%2B+guide+to+networks}}</ref> The selection is directed a separate set of digital inputs known as select lines. A multiplexer of <math>2^n</math> inputs has <math>n</math> select lines, which are used to select which input line to send to the output.<ref>{{cite book | last = Debashis | first = De | title = Basic Electronics | publisher = Dorling Kindersley | year = 2010 | pages = 557 | isbn = 9788131710685 | url = https://books.google.com/books?id=mT_j4F1bJx4C&q=Basic+Electronics+By+De+Debashis}}</ref>