0xF9

0xF9 is a hexadecimal literal commonly used in computing to denote the 8-bit value 249 in decimal. The prefix 0x indicates hexadecimal notation, a standard in many programming languages such as C, C++, Java, and Python.

Numeric properties of 0xF9 include a decimal value of 249 and a binary representation of 11111001. In an unsigned 8-bit interpretation, it represents 249. When interpreted as a signed 8-bit value using two’s complement, 0xF9 corresponds to -7.

In practical usage, 0xF9 appears as a byte value in memory, data streams, and file formats. It may function as an opcode in certain instruction sets or as part of a bitmask in low-level programming. Because it is a single byte, its meaning is context-dependent and determined by the surrounding protocol, instruction set, or file specification.

Character encoding notes show a related interpretation: in ISO/IEC 8859-1 (Latin-1), the byte 0xF9 maps to the character ù (Latin small letter u with grave). In Unicode terms, the corresponding code point is U+00F9. However, mappings between byte values like 0xF9 and Unicode code points depend on the encoding in use.

In summary, 0xF9 is a standard hexadecimal representation of the value 249, used across programming and digital systems, with properties that vary by context, including potential character encoding mappings and protocol-specific meanings.