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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).
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 text mode of standard (VGA-compatible) PC graphics hardware is built around using an 8-bit code page, though it is possible to use two at once with some color depth sacrifice, and up to eight may be stored in the display adapter for easy switching. [12] There was a selection of third-party code page fonts that could be loaded into such ...
A typical OEM code page, in its second half, does not resemble any ANSI/Windows code page even roughly. Nevertheless, two single-byte, fixed-width code pages (874 for Thai and 1258 for Vietnamese ) and four multibyte CJK code pages ( 932 , 936 , 949 , 950 ) are used as both OEM and ANSI code pages.
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 ]
Files that contain machine-executable code and non-textual data typically contain all 256 possible eight-bit byte values. Many computer programs came to rely on this distinction between seven-bit text and eight-bit binary data, and would not function properly if non-ASCII characters appeared in data that was expected to include only ASCII text ...
For instance, support for all above mentioned 8-bit encodings, with the exception of Windows-1258, was dropped from Mozilla software in 2014. [11] Many Vietnamese fonts intended for desktop publishing are encoded in VNI or TCVN3 . [9] Such fonts are known as "ABC fonts". [12]
[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.