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VSCII (Vietnamese Standard Code for Information Interchange), also known as TCVN 5712, [2] ISO-IR-180, [3].VN, [4] ABC [4] or simply the TCVN encodings, [4] [5] is a set of three closely related Vietnamese national standard character encodings for using the Vietnamese language with computers, developed by the TCVN Technical Committee on Information Technology (TCVN/TC1) and first adopted in ...
The successful inclusion of composed and precomposed Vietnamese in Unicode 1.0 was the result of the lessons learned from the development of 8-bit VISCII and 7-bit VIQR. [2] The next year, in 1993, Vietnam adopted TCVN 5712, its first national standard in the information technology domain. [3]
Windows-1258 is a code page used in Microsoft Windows to represent Vietnamese texts. It makes use of combining diacritical marks.. Windows-1258 is compatible with neither the Vietnamese standard (TCVN 5712 / VSCII), nor the various other encodings in use in practice (VISCII, VNI, VPS).
Symbol Set 2S — ISO 17: 7-bit Spanish; Symbol Set 2U — ISO 2: 7-bit International Reference Version; Symbol Set 3N — ISO 8859-3 Latin 3; Symbol Set 3R — PC-866 Russia (Practically the same as code page 866) Symbol Set 3S — ISO 10: 7-bit Swedish; Symbol Set 4N — ISO 8859-4 Latin 4; Symbol Set 4S — ISO 16: 7-bit Portuguese
The term "ANSI" is a misnomer because these Windows code pages do not comply with any ANSI (American National Standards Institute) standard; code page 1252 was based on an early ANSI draft that became the international standard ISO 8859-1, [3] which adds a further 32 control codes and space for 96 printable characters. Among other differences ...
[1] [2] It's by far mostly used for Russian, while a small minority of Russian websites use it, with 94.6% of Russian (.ru) websites using UTF-8, [3] [4] [5] and the legacy 8-bit encoding is distant second. In Linux, the encoding is known as cp1251. [6] IBM uses code page 1251 (CCSID 1251 and euro sign extended CCSID 5347) for Windows-1251.
In 2001, these two characters were deprecated as duplicate encodings of U+0300 ̀ COMBINING GRAVE ACCENT and U+0301 ́ COMBINING ACUTE ACCENT; [4] this change was incorporated into Unicode 3.2, released in 2002. [5] With the 2009 release of Unicode 5.2, U+0340 ̀ and U+0341 ́ were undeprecated but discouraged.
In modern applications Unicode and UTF-8 are preferred; authors of new web pages and the designers of new protocols are instructed to use UTF-8 instead. [3] Since 2023, less than 0.05% of all web pages use ISO-8859-9, [ 4 ] [ 5 ] while 2.1% of web pages located in Turkey declare use of ISO-8859-9. [ 6 ]