## Comment one complent, two complement (Score 1) 434

They don't have the same unsigned arithmetic.

That seems wrong to me. In fact it seem the wrong way around for me.

For signed binary arithmetic there are two option:

One-Complement: Where we have symmetric positive and negative ranges. Including a negative zero. Seldom used.

Two-Comlement: Where we have asymmetric positive and negative ranges. With the negative range having one extra number.

But for unsigned binary arithmetic I only know one way of doing it. 30 years of experience in the field. More then a dozen programming languages learned. Degree in computer science. I am hard pressed to even think of a different way to do unsigned binary arithmetic. Even on a purely abstract and academic level.

But one is never to old to learn something new and I a the curious type: Please enlighten me!