Difference Between Multiplexing and Demultiplexing

The technique of combining one signal into multiple signal and multiple signals into one signal is termed as multiplexing and demultiplexing. Networking field has multiple signals which to be shared over a single medium and it uses mux to convert signal to one. You can even read why we use multiplexing technique and what are the types of multiplexing. We make it simple and easy
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Multiplexing Definition

Multiplexing is method or technique in which multiple signals are combined into one signal that travels on a medium.

Multiplexing diagram one to many signal
Multiplexing multiple signal to one signal


Demultiplexing Definition

Demultiplexing is totally reverse of multiplexing in demultiplexing a signal is again decomposed in individual signals.

demultiplexing diagram
one signal to multiple signal demultiplexing

Difference in Multiplexing and Demultiplexing:

Below is not a tabular base difference but it could help in understanding the basic difference between mux and demux. 

Multiplexer ( MUX)

  1. It have so many inputs & one output.
  2. People call it MUX
  3. In mux the selection of particular input is controlled by set of selection lines.
  4. Parallel to serial conversion.
  5. When we design multiplexer, we don't need additional gates.
  6. Examples are (8 input  1 output), (16 input 1 output), (32 input 1 output).

Demultiplexer (DEMUX)

  1. For demultiplexing purpose it has One inputs & many output.
  2. People call it DEMUX.
  3. In DEMUX selection of output line is controlled by bit values of n selection lines
  4. Serial to parallel conversion.
  5. Additional gates are included when designing de-multiplexer.
  6. Examples are (1 input  8 output), (1 input 16 output), (1 input 32 output).
Conclusion:
The conclusion to explain difference between multiplexer and de-multiplexer that, if you want to convert 1 input to multiple output then we use demultiplexer. If you need to convert multiple output into 1 then we must use multiplexer. Moreover Multiplexer has the capability to convert multiple signal and it is called parallel to serial conversion.

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2 Comments

  1. In mux the selection of particular input is controlled by set of selection lines.
    In DEmuX selection of output line is controlled by bit values of n selection lines

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    1. Thanks sabina your points are added to the article :)

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