| 摘要 |
PROBLEM TO BE SOLVED: To easily changing-over and selecting key operation parts to be used by the usage scene of a personal digital assistant. SOLUTION: A key input module 7 includes: the first key input operation part arranged on one surface; and the second key input operation part arranged on the other surface. The key input operation parts are storable and drawable by sliding in a recession 6 arranged in a personal digital assistant case body 5 from the side surface of the case body. The surfaces with the key input operation parts arranged thereon are rotated by 180°around an axis, which is vertical relative to the side surface of the case body, in a state where the key input operation parts are drawn out from the side surface of the case body by sliding in the recession 6. Consequently, the key input operation parts are changed-over, thereby outputting a key input from the key input operation part, which faces the display surface side of a display part 3 arranged in the personal digital assistant, as an effective input. COPYRIGHT: (C)2008,JPO&INPIT
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