When multiple signals share the common medium, there is a possibility of collision.For example: If there are 10 signals and bandwidth of medium is100 units, then the 10 unit is shared by each signal. If there are multiple signals to share one medium, then the medium must be divided in such a way that each signal is given some portion of the available bandwidth.The medium can only have one signal at a time. The transmission medium is used to send the signal from sender to receiver.Therefore, we can say that demultiplexing follows the one-to-many approach. DEMUX separates a signal into its component signals (one input and n outputs). Multiplexing follows many-to-one, i.e., n input lines and one output line.ĭemultiplexing is achieved by using a device called Demultiplexer ( DEMUX) available at the receiving end. Multiplexing is achieved by using a device called Multiplexer ( MUX) that combines n input lines to generate a single output line.

The process of combining the data streams is known as multiplexing and hardware used for multiplexing is known as a multiplexer. Multiplexing is a technique used to combine and send the multiple data streams over a single medium.

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