In computer networks, multiplexing is used to refer to a process where multiple channels are combined together to form a single bandwidth, and is transferred across the communication media. As we have cable in t.v. which gives plenty of channels in a single wire. This technique helps in making the transmission more inexpensive by transmitting the expensive signals. The device which perform this task is known as Multiplexer ( MUX ). So, it reveals that the multiplexing is a process of combining many channels in to one single bandwidth.
