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 inputs has
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.