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Computer organization Notes

Difference between Multiplexer and De-Multiplexer

Multiplexer De-multiplexer
Multiplexer is a combinational circuit which selects one of the 2n inputs and route it to the output. It takes data from one line and distributes to given number of output lines.
It is constructed with OR gate & AND gate. It is constructed with AND gate.
It is known as Data Selector It is known as Data distributor.
It is referred as MUX It is Referred as De-MUX
Multiplexer means many inputs and 1 output. De-multiplexer means One input and Many Outputs.
It has 2n inputs , n select lines that identifies which input will be provided to the only output. It has 2n outputs, n select lines that identifies which output will be connected to the only input.

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