/diy/ - Do It Yourself

So this is 20k counts.
So in the range from 0 to 2v it can display up to 1.9999v. But who decides on the range? What if the range was 0 to 1v? then it would be 10k counts? Can't we just say that the resolution is 0.0001v and isn't that all you need to know? You'd guess that it is a 16-bit ADC (which is pretty standard I think).