Multiplexer and Demultiplexer

Multiplexer and Demultiplexer are simple device made from basic logic gates. The devices are basic parts of Read Only Memory (ROM), Random Access Memory (RAM), and Arithmetic Logic Unit(ALU).

Multiplexer is a device used to select one of several input as the output of the device (Out).
The device works by selecting the input choosen by S1,S2,S3.

Demultiplexer is a device used to select one of several output line, to which it must transfer an input (In) value.
The device works by selecting the output choosen by S1,S2,S3.