Hexidecimal+numbers

In mathematics and computer science, **hexadecimal** (also //base-16//, **hexa**, or **hex**) is a numeral system with a base of 16. It uses sixteen distinct symbols, most often the symbols **0**–**9** to represent values zero to nine, and //A//, //B//, //C//, //D//, //E//, //F// (or //a// through //f//) to represent values ten to fifteen. Its primary use is as a human friendly representation of binary coded values, so it is often used in digital electronics and computer engineering. Since each hexadecimal digit represents four binary digits (bits)—also called a nibble—it is a compact and easily translated shorthand to express values in base two.