- So far we looked at how unsigned binary numbers relate to other base value numbers.
- But, we also need to represent signed numbers so we need a way to represent both negative (-) and positive (+) signs.
- The problem is that there are only 0s and 1s to work with; no other symbols such as + and - are available.
- Conveniently, positive and negative are also binary values so it is simple to use binary numbers to represent them.
- Next we will look at some examples of how signed numbers may be represented using binary numbers only.