2.2. 2.2 Numbering Systems
Most modern computer systems do not represent numeric values using the decimal system. Instead, they typically use a binary or two's complement numbering system. To understand the limitations of computer arithmetic, you must understand how computers represent numbers.
2.2.1. 2.2.1 A Review of the Decimal System
You've been using the decimal (base 10) numbering system for so long that you probably take it for granted. When you see a number like "123," you don't think about the value 123; rather, you generate a mental image of how many items this value represents. In reality, however, the number 123 represents
1*102 + 2 * 101 + 3*100
or
100+20+3
In the positional numbering system, each digit appearing to the left of the decimal ...
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