History
The Telex input method is based on a set of rules for transmitting accented Vietnamese text over telex () first used in Vietnam during the 1920s and 1930s. Telex services at the time ran over infrastructure that was designed overseas to handle only a basicz
, .html" ;"title="/code> for "ư", and ">/code> for "ư", and
/code> for "ơ". It was further popularized with the input method editors VietKey, Vietres, and VPSKeys 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 Mi ...
. In 1993, the use of Telex as an input method was standardized in Vietnam as part of TCVN 5712.
In the 2000s, Unicode
Unicode, formally The Unicode Standard,The formal version reference is is an information technology standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems. The standard, ...
largely supplanted language-specific encodings on modern computer systems and the Internet
The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a '' network of networks'' that consists of private, p ...
, limiting Telex's use in text storage and transmission. However, it remains the default input method for many input method editors, with VIQR and VNI offered as alternatives. It also continues to supplement international Morse Code
Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one ...
in Vietnamese telegraph transmissions.
Starting with Windows 10
Windows 10 is a major release of Microsoft's Windows NT operating system. It is the direct successor to Windows 8.1, which was released nearly two years earlier. It was released to manufacturing on July 15, 2015, and later to retail on ...
version 1903, TELEX, along with the VNI input method, are now natively supported.
Rules
Because the Vietnamese alphabet
The Vietnamese alphabet ( vi, chữ Quốc ngữ, lit=script of the National language) is the modern Latin writing script or writing system for Vietnamese. It uses the Latin script based on Romance languages originally developed by Portuguese m ...
uses a complex system of diacritical mark
A diacritic (also diacritical mark, diacritical point, diacritical sign, or accent) is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek (, "distinguishing"), from (, "to distinguish"). The word ''diacrit ...
s, Telex requires the user to type in a base letter, followed by one or two characters that represent the diacritical marks:
To write the pair of keys as two distinct characters, the second character has to be repeated. For example, the Vietnamese word must be entered as cari xooong
rather than cari xoong
(*).
If more than one tone marking key is pressed, the last one will be used. For example, typing asz
will return "a". (Thus ''z'' can also be used to delete diacritics when using an input method editor.) To write a tone marking key as a normal character, one has to press it twice: her
becomes , while herr
becomes .
See also
* VNI
* VIQR
* VISCII
External links
* Guide to inputting Vietnamese text at the Vietnamese Wikipedia
Learn To Type Vietnamese
at YourVietnamese
References
{{reflist
Vietnamese character input