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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 ...
VISCII was designed by the Vietnamese Standardization Working Group (Viet-Std Group) [1] led by Christopher Cuong T. Nguyen, Cuong M. Bui, and Hoc D. Ngo based in Silicon Valley, California in 1992 while they were working with the Unicode consortium to include pre-composed Vietnamese characters in the Unicode standard.
The majority of code pages in current use are supersets of ASCII, a 7-bit code representing 128 control codes and printable characters.In the distant past, 8-bit implementations of the ASCII code set the top bit to zero or used it as a parity bit in network data transmissions.
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]
VPSKeys is a freeware input method editor developed and distributed by the Vietnamese Professionals Society (VPS). One of the first input method editors for Vietnamese, it allows users to add accent marks to Vietnamese text on computers running Microsoft Windows. The first version of VPSKeys, supporting Windows 3.1, was released in 1993.
Windows code pages are sets of characters or code pages (known as character encodings in other operating systems) used in Microsoft Windows from the 1980s and 1990s. Windows code pages were gradually superseded when Unicode was implemented in Windows, [citation needed] although they are still supported both within Windows and other platforms, and still apply when Alt code shortcuts are used.
Telex or TELEX (Vietnamese: Quốc ngữ điện tín, lit. 'national language telex'), is a convention for encoding Vietnamese text in plain ASCII characters. Originally used for transmitting Vietnamese text over telex systems, it is one of the most used input method on phones and touchscreens and also computers. Vietnamese Morse code uses the ...
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).