0x12AB

0x12AB is a hexadecimal literal commonly used in programming and computing to denote the numeric value 4779 in decimal. The leading 0x indicates that the digits are base-16, with digits 0-9 and A-F as symbols.

In source code, 0x12AB may appear as a constant, a bitmask, or a memory address, depending on language, compiler, and architecture. For instance, in C or C++, int v = 0x12AB; in embedded or systems programming, it could represent a 16-bit register value or a field in a protocol header. Its meaning can vary widely between contexts, from simple numeric data to a flag combination or an offset within a data structure.

Because hex values are context-dependent, 0x12AB has no single universal meaning. It could denote different things in different specifications, from hardware registers to data words to example values in tutorials. When encountering 0x12AB in a document or codebase, it is important to consult the relevant domain documentation or source to determine its intended interpretation.

Related concepts include hexadecimal notation and the 0x prefix used to introduce hexadecimal literals in many programming languages, as well as general practices for representing numeric values in various bases.