Hexadezimalsystemen

Hexadezimalsystemen, or the hexadecimal numeral system, is a base-16 numeral system used primarily in computing. It represents numbers using sixteen distinct symbols: the digits 0 through 9 and the letters A through F (case-insensitive).

Because each hexadecimal digit corresponds to four binary bits, hex is convenient for representing bytes and larger binary data. Two hex digits form one byte (for example, 0x7F represents the binary 01111111, which is 127 decimal).

In practice, hex appears in programming, debugging, and digital electronics. It is commonly used to display memory addresses, machine code, and error codes, and as a concise way to write long binary values. In web design, hex is used to specify colors as RRGGBB hex values, such as #1A2B3C.

In programming languages, a prefix such as 0x in C, C++, Java, and many others denotes a hexadecimal literal. Some contexts allow suffix h (for example, 1Ah).

Historically, Hexadezimalsystemen gained prominence with the adoption of byte-oriented architectures in the 1960s and later, as it aligns well with the binary and hexadecimal boundaries used in computer hardware and software.

Notes: hex digits A–F can be written in uppercase or lowercase. The system is distinct from decimal but frequently used alongside it in calculations and data representation.