The fixed-point number representation is appropriate for representing numbers with small numerical values that are considered as positive or negative integers; that is, the implied radix point is to the right of the low-order bit. The same algorithms for arithmetic operations can be employed if the implied radix point is to the immediate right of the sign bit, thus representing a signed fraction.
The range for a 16-bit fixed-point number is from (–215) to (+215 – 1), which is inadequate for some numbers; for example, the following operation:
This operation can also be written in scientific notation, as follows:
where 10 is the base and 11 ...