0x01FF

0x01FF is a hexadecimal numeral used in computing to denote the decimal value 511. The 0x prefix marks hex notation, and the value equals 511 in decimal. In binary, it is 00000001 11111111 in a 16-bit representation, which means the lower nine bits are set.

In programming, 0x01FF appears as a literal in languages such as C, C++, Java, and Python. It is commonly used as a constant, for example as a bitmask to select the lower nine bits of a value or as a flag field with multiple bits active.

In Unicode, the code point U+01FF exists; it represents a specific Latin-script character, with the glyph depending on the font. In code, a programmer may encounter 0x01FF when working with Unicode code points, encoding, or escaping.

Leading zeros do not change the value: 0x01FF equals 0x1FF. In some languages, a leading zero without a 0x prefix could imply octal, so the 0x prefix is important to indicate hexadecimal.

In hardware and low-level software, 0x01FF may be used as a mask or identifier in memory-mapped registers, bit fields, or protocol definitions that reserve the lower bits for flags.

Overall, 0x01FF serves as a compact example of hexadecimal notation, illustrating how hex literals convey a specific numeric value and bit pattern across software and digital systems.