When you created something using this microcontroller,digital and analog pin would be in use and what the big different about the result of using these pins to be input or output ?
Sinking current, sourcing current, and high impedance, but being a microchip, the amount of power it can supply or sink is very limited (max 40mA).
It sounds like you know very little about electronics in general. The best advice I can give is to follow the tutorials TO A TEE, and try to understand each before moving to the next.
All I know is about digital send and logical signal and the analog one is some of like levels of voltage or current..
but never know the different between them in a practical..
And
Thanks for the help @tinman13kup 
you right one about I am beginner about this kind
And thanks for the advice I'll try to follow and understand the tutorials.
There is no true analog output from an 8 bit Arduino. When you use analogWrite(), it outputs a digital PWM signal.
Variants of the Arduino with other processors may have DACs in them and output a "true" analog signal.