74HC4051 Multiplexing/Demultiplexing Analog IC

Even Though 74hc4051 performs both multiplexing and demultiplexing... I dont want to discuss Demultiplexing Now... because i don't need it now. if i need it any time i didn't mind coming back.

multiplexing is choosing from one of various lines (one at a time) and forwards its contents down a single line i.e whatever voltage on it is forwarded to the Common Out/In line

the pinout of 74HC4051 is


74hc4051 is a useful device which can multiplex and demultiplex up to 8 analog signals into a single analog signal.

in the above pinout A0 to A7 serve as Inputs and A serve as output (pin3)
s0,s1,s2 serve as Address select inputs which are used to send the selected input to Output
E(pin 6) is a active low input which is used to Enable or Disable the IC
Vcc and Gnd are power and ground connections
VEE is the negative supply. which is used to forward the negative input voltage to output
in my case negative voltage is not applied to Arduino So I don't want to bother with
it. so i just connect with the Ground.

So if we connect the pin6,7,8 to the ground and s0,s1,s2 to the arduino output pins and pin3 (A) to the Input port pin we are good to go.

by selecting each combination of s0,s1,s2 we can send the respective input to the output of the Mux....