| 摘要 |
A reduced keyboard system (100), with a reduced number of keys (13, 15, 23, 25, 102, 104, 106, 108, 110, 112), retains the typing map of the conventional QWERTY or QWERTY-type keyboard by employing an intuitive and learning database engine. A plurality of letters, numerals, symbols and functions are assigned to a set of data keys, buttons or data inputs (multi-character keys). The arrangement of the multi-character keys together with the character assignments to the individual multi-character keys allows a user to use the same typing map, as when typing on a conventional QWERTY or QWERTY-type keyboard, be it visual mapping (i.e. physical location of keys) or finger mapping (i.e. touch typing for typist). The keys are not chordal, so, at the beginning of a word, when a key receives a single key press one of the characters associated with the key is identified and displayed, which one depending on, say, a frequency table of the associated keys held in the database. The first character can be corrected by pressing the cycle key to go through the other characters associated with the key (rather than the same key again). As the word is built however with further key presses, the consequent character generated from each key press from the limited number of characters associated with the key, is extracted from the database in accordance with the sequence of keystrokes so far made.
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