Dividing by Zero

Dear sci/math,

I have a problem i would like to understand. Everybody knows you can't divide by zero, like everybody knows that binary codes just consist of 0 and 1.
First question: Why do you take a variable that is not defined at
for such an important system?

Second question: Would there be any difference if zero was defined for the casual use of Computers?

Maybe someone can help me just imagining how zero could be defined a little, if my questions make too little sense.

Thanks anon.

I don't understand your second question.  As for the first, what do you suppose you would define it to be?  Maddox once wrote something on this very topic.

"The quotient 5/0 or -9/0 was not included because it is impossible to make sense out of these symbols. Imagine trying to divide something into nothing, and you'll see why."