| 摘要 |
Touch typing on a telephone keypad is achieved by representing each letter as a combination of two separate symbols appearing on separate keys of a keypad. The keys may be operated by using the thumbs of both hands. In one embodiment, six symbols appearing on six separate keys are used to represent all of the letters A-Z. The six keys may be grouped together or may be split apart with one portion arranged on one side of a device display and another portion arranged on an opposite side of the display. Input may be accelerated in various ways using multiple key presses at the same time.
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