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→Decimal / Binary / Octal / Hexadecimal Numbering Systems
''Octal / Hexadecimal Numbers''
<table align="right"><tr valign="top"><td>[[Image:octal-number-2.png|thumb|right|200px|The '''octal''' numbering system.<br>(Image licensed under [https://creativecommons.org/licenses/by-sa/3.0/ cc])]]</td><td>[[Image:hex-number-2.png|thumb|right|420px|The '''hexadecimal''' numbering system.<br>(Image licensed under [https://creativecommons.org/licenses/by-sa/3.0/ cc])]]</td></tr></table>
The '''octal''' and '''hexadecimal''' numbering systems are represented by values consist of digits of numbers '''0 - to 7 ''' and '''0 - to F ''' respectively. For ''hexadecimal '' numbers, values for '''10 to 15 (which can only be ''' are represented by a single digit) use letters a the characters '''A to f F''' respectively.
The numbering system is based on sums of the power of 2.
