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ASCII was incorporated into the Unicode (1991) character set as the first 128 symbols, so the 7-bit ASCII characters have the same numeric codes in both sets. This allows UTF-8 to be backward compatible with 7-bit ASCII, as a UTF-8 file containing only ASCII characters is identical to an ASCII file containing the same sequence of characters.
A character repertoire is the set of characters that can be represented by a particular coded character set. [ 9 ] [ 10 ] The repertoire may be closed, meaning that no additions are allowed without creating a new standard (as is the case with ASCII and most of the ISO-8859 series); or it may be open, allowing additions (as is the case with ...
HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name. A numeric character reference uses the ...
Various proprietary modifications and extensions of ASCII appeared on non-EBCDIC mainframe computers and minicomputers, especially in universities.Hewlett-Packard started to add European characters to their extended 7-bit / 8-bit ASCII character set HP Roman Extension around 1978/1979 for use with their workstations, terminals and printers.
It is a superset of ASCII, and has most of the characters that are in ISO-8859-1 and all the extra characters from Windows-1252, but in a totally different arrangement. The few printable characters that are in ISO/IEC 8859-1, but not in this set, are often a source of trouble when editing text on Web sites using older Macintosh browsers ...
ITU-T recommendation T.50 specifies the International Reference Alphabet (IRA), formerly International Alphabet No. 5 (IA5), a character encoding. ASCII is the U.S. variant of that character set. The original version from November 1988 corresponds to ISO 646. The current version is from September 1992.
The phrase ANSI character set has no well-defined meaning and has been used to refer to the following, among other things: . Windows code pages, a collection of 8-bit character sets compatible with ASCII but incompatible with each other, especially those code pages that are partly compatible with ISO-8859, most commonly Windows Latin 1
ASCII: 1967 (USAS X3.4-1967) [3] [7] [6] 7 bits Close to "modern" definition of ASCII Transcode: 1967 7 bits IBM data transmission terminal 2780, 3780: Recommendation V.3 IA5: 1968 7 bits MARC-8: 1968 7 bits Library computer systems Braille ASCII: 1969 6/7 bits Tactile print for blind persons JIS X 0201: 1969 6/7 bits First Japanese electronic ...