74HC4051 8-Channel Analog/Digital Multiplexor Module

A multiplexer or demultiplexer enables you to expand the in-and outputs on your Arduino board.The 4051 is an 8 channel analog multiplexer / demultiplexer:If you use the 4051 as a Multiplexer: You can choose between 8 different inputs and select just one you want to read at the time.If you use the 4051 as a Demultiplexer: You can choose between 8 different outputs and select just one you want to write at the time.Futhermore, the 4051 is able to work with analog values; in the case of the Arduino, you are able to use the analog inputs with a voltage between 0-5V and route them to an Analog-In Pin on your Arduino.DocumentsTUTORIAL FOR ARDUINOArduino Library