Hexadecimal
In mathematics and computing, the hexadecimal is a positional numeral system that represents numbers using a radix (base) of 16. Unlike the common way of representing numbers using 10 symbols, hexadecimal uses 16 distinct symbols. Hexadecimal uses symbols "0"–"9" to represent values 0 to 9, and "A"–"F" to represent values 10 to 15. A hexadecimal digit can be any of the following 16 digits: 0 1 2 3 4 5 6 7 8 9 A B C D E F.
Hexadecimal numerals are widely used by computer system designers and programmers because they provide a human-friendly representation of binary-coded values. Each hexadecimal digit represents four bits (binary digits).
Source :
1. https://www.bbc.co.uk/bitesize/guides/zp73wmn/revision/1
2. https://en.wikipedia.org/wiki/Hexadecimal
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