Quote:

> What do the terms Signed and Unsigned mean? e.g. an unsigned integer

Unsigned : Can not be smaller than zero (negative)

signed : Can be smaller than zero.

Since the sign uses up one bit of a signed value, a n-bits integer number

has the following ranges

as signed : -(2^(n-1)) ..... 2^(n-1) -1

as unsigned: 0.. 2^n -1