Method for generating non-native characters on devices
An animation shows how an input method producesKorean texts.
Aninput method (orinput method editor, commonly abbreviatedIME) is anoperating system component or program that enables users to generate characters not natively available on theirinput devices by using sequences of characters (or mouse operations) that are available to them. Using an input method is usually necessary for languages that have moregraphemes than there are keys on the keyboard.
For instance, on the computer, this allows the user ofLatinkeyboards to inputChinese,Japanese,Korean andIndic characters. On hand-held devices, it enables the user to type on thenumeric keypad to enterLatin alphabet characters (or any other alphabet characters) or touch a screen display to input text. On some operating systems, an input method is also used to define the behavior of thedead keys.
Although originally coined forCJK (Chinese, Japanese and Korean) computing, the term is now sometimes used generically to refer to a program to support the input of any language. To illustrate, in theX Window System, the facility to allow the input ofLatin characters withdiacritics is also called an input method.
While the terminput method editor was originally used forMicrosoft Windows, its use has now gained acceptance in other operating systems[citation needed], especially when it is important to distinguish between thecomputer interface and implementation of input methods, or among the input methods themselves, the editing functionality of the program or operating system component providing the input method, and the general support of input methods in an operating system. This term has, for example, gained general acceptance on the Linux operating system andAndroid;[1] it is also used onmacOS.[2]
The terminput method generally refers to a particular way to use the keyboard to input a particular language, for example theCangjie method, thepinyin method, or the use ofdead keys.
On the other hand, the terminput method editor on Microsoft products refers to the program that allows an input method to be used (for example MS New Pinyin), or theediting area that allows the user to do the input. It can also refer to a character palette, which allows any Unicode character to be input individually.
Multi-tap – Text entry system for mobile phones —Used on many mobile telephones—hit the (combined alphanumeric) key for the letter you want until it comes up, then wait or proceed with a different key.
T9 – Mobile phone technology/XT9—Type the key for every letter once, then, if needed, type Next until the right word comes up. May also correct misspellings and regional typos (if an adjacent key is pressed incorrectly).
iTap – Predictive text system —Similar to first-generation T9, with wordautocomplete.
LetterWise – Patented predictive text entry systems—Hit the key with the letter you want, if it doesn't come up, hit Next until it does.
FITALY – Keyboard layout for stylus or touch input (An array, almost square, which minimizes distance travelled from one letter to another.)
MessagEase, an input method optimized for the most common letters, that can enter hundreds of characters with single hand motions
8pen, an input method using circular swipes in an attempt to mimic hand movements
Graffiti, the Palm OS input method, entered using a stylus
^Meddaugh, Jason (2013-02-01),2012: A Technology Year in Review, US: American Foundation for the Blind, archived fromthe original on 2021-02-11, retrieved2013-02-25,Our top story of 2012 involves a formerly little-known app called Fleksy and its rise toward prominence and mainstream acceptance.
^Fiedlerová, Klára (2012-05-10),Possibilities of Text Input for Handicapped People(PDF), Prague: Czech Technical University in Prague, p. 15, archived fromthe original(PDF) on 2017-10-14, retrieved2012-08-01,Word prediction is used to speed up the text entry. The prediction system uses the context of the sentence to predict three words that could be used next.