I am not understanding your question.
You want to read a voltage(adjusted by a pot) then output it on 6 bits?
do you mean output it in binary on 6 different pins? Why 6?
maybe a little more context will help us help you 
I am not understanding your question.
You want to read a voltage(adjusted by a pot) then output it on 6 bits?
do you mean output it in binary on 6 different pins? Why 6?
maybe a little more context will help us help you