<P> In electronics, a multiplexer (or mux) is a device that selects one of several analog or digital input signals and forwards the selected input into a single line . A multiplexer of 2 n (\ displaystyle 2 ^ (n)) inputs has n (\ displaystyle n) select lines, which are used to select which input line to send to the output . Multiplexers are mainly used to increase the amount of data that can be sent over the network within a certain amount of time and bandwidth . A multiplexer is also called a data selector . Multiplexers can also be used to implement Boolean functions of multiple variables . </P> <P> An electronic multiplexer makes it possible for several signals to share one device or resource, for example, one A / D converter or one communication line, instead of having one device per input signal . </P>

A multiplexer/data selector is a logic circuit that