| 摘要 |
PURPOSE: A character input device is provided to reduce the number of input letters while inputting an English sentence by assigning the alphabet to 1 to 4 units for each key while keep a encyclopedic sequence in a keyboard or a touch screen using keys more than dozen. CONSTITUTION: The alphabet of 26 units is divided to dozen like ab, cd, efg, h, ijk, lm, n, opq, r, s, tuv and wxyz, and is successively assigned to the key of dozen. The first or the fourth alphabet among the alphabet which is assigned to the key is inputted according to times which successively hit the key within the limited time.
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