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ERIC Number: ED430337
Record Type: RIE
Publication Date: 1998-Mar-6
Pages: 6
Abstractor: N/A
AAC: Using a Reduced Keyboard.
Kushler, Cliff
This paper describes the development of a new technique for augmentative and alternative communication text input, commercially known as T9. T9 stands for "typing with 9 keys." The basic T9 technology is designed so that 3 or 4 letters are printed on each of 7 keys, and an 8th key is used as an unambiguous "space" key. Each keystroke designating a letter is, therefore, ambiguous. The letters can be assigned to the seven keys in alphabetical order, but significantly greater efficiency in disambiguating key sequences can be achieved by assigning the letters in the following groups: THKP, MEG, ISYV, CLOJ, ADFX, QUNW, and BRZ. Each keystroke sequence is processed with a complete database containing the spelling of a huge lexicon of words. Words that match the sequence of keystrokes are presented to the user in a list on the display. The most frequently occurring word is automatically selected unless the user presses the "select" key to select another choice. The benefits of using a reduced keyboard for meeting the communication needs of non-speaking individuals with severe motor impairments are discussed. (CR)
Publication Type: Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A