U0030U0039

U+0030 and U+0039 are Unicode code points in the Basic Latin block that designate the characters '0' and '9', respectively. When these code points are written in sequence as U+0030 U+0039, they form the two-character string "09". The notation U+XXXX is the standard way to reference Unicode code points.

Technical details include their numeric values and properties. U+0030 has decimal value 48, and U+0039 has decimal value 57. Both characters have the general category Nd (Decimal Digit) and the bidi class EN (European Number). Their numeric values correspond to 0 and 9, and they are widely used as digits across text and data.

Encoding considerations: in UTF-8, U+0030 and U+0039 are encoded as single bytes 0x30 and 0x39, which match their ASCII representations. In UTF-16 they appear as 0x0030 and 0x0039, and in UTF-32 as 0x00000030 and 0x00000039. Their representations are consistent across common Unicode encodings, reflecting their status as ASCII digits.

Usage and compatibility: these code points are the standard digits used to compose numbers in many scripts, computer programs, and data formats. They appear in string literals, identifiers, and numeric data, and they are supported by virtually all fonts and software. In markup and programming, they can be escaped using numeric character references, such as 0 or 0 for '0', and 9 or 9 for '9'.

See also: Unicode, ASCII, Basic Latin, decimal digits.