| 摘要 |
A data processor unit to be held in one hand and to be oriented in different positions in space (letters X and Y), includes a display screen (number 2) viewable by the user and a microcontroller having two orthogonally-mounted, solid-state, micromachined tilt meters for measuring the tilts of the X and Y axes of the screen with respect to a gravity for controlling the display on the screen in accordance with the measure tilt. A number of applications of such a data processor unit are described, including a mobile telephone, a personal digital assistant, a computer game, a body-position sensor particularly useful for detecting drowsiness of a vehicle driver, and a dynamic spherical keyboard facilitating key selection.
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