!!! Overview
[{$pagename}] (also [Base-16], or [hex]) is a [Positional notation] system and [Data representation] for [numbers] with a radix of 16. 

[{$pagename}] uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A, B, C, D, E, F (or alternatively a, b, c, d, e, f) to represent values ten to fifteen. 

[{$pagename}] numerals are widely used by computer system designers and programmers. Several different notations are used to represent [{$pagename}] constants in computing languages; the prefix "0x" is widespread due to its use in Unix and C (and related operating systems and languages). Alternatively, some authors denote [{$pagename}] values using a suffix or subscript. 

For example, one could write 0x2AF3 or 2AF316, depending on the choice of notation.

As an example, the [{$pagename}] number 2AF316 can be converted to an equivalent decimal representation. Observe that 2AF316 is equal to a sum of (200016 + A0016 + F016 + 316)

Each [{$pagename}] digit represents four binary digits (bits), and the primary use of [{$pagename}] notation is a human-friendly representation of binary-coded values in computing and digital electronics. 

One [{$pagename}] digit represents a nibble, which is half of an octet or byte (8 bits). 

For example, byte values can range from 0 to 255 (decimal), but may be more conveniently represented as two [{$pagename}] digits in the range 00 to FF. 

[{$pagename}] is also commonly used to represent computer memory addresses.

!! More Information
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* [#1] - [Hexadecimal|Wikipedia:Hexadecimal|target='_blank'] - based on data observed:2015-05-18