Numbering Systems Used in Computers
Three numbering systems are used in computers: decimal, binary, and hexadecimal. Decimal is also known as base 10. Binary is also known as base 2, and hexadecimal is also known as base 16. Here's an illustration to help you remember the basic differences between them.
You already are familiar with the decimal system: Look at your hands. Now, imagine your fingers are numbered from 0–9, for a total of 10 places. Decimal numbering is sometimes referred to as base 10.
The binary system doesn't use your fingers; instead, you count your hands: One hand represents 0, and the other 1, for a total of two places. Thus, binary numbering is sometimes referred to as base 2.
The hexadecimal system could be used by a pair ...
Get Absolute Beginner's Guide to A+ Certification now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
