| 摘要 |
PROBLEM TO BE SOLVED: To perform key input of different control functions by attaching to a key switch part of an information processor with facing up either the front side or the back side. SOLUTION: A reversible keyboard 5 is attached to a concave part provided with a key rubber for attaching the keyboard with facing up either the front side or the back side. The reversible keyboard 5 consists of key tops 51a, 51b to depress a key rubber 33, a front side key cabinet 5a and a back side key cabinet 5b having opening parts 52a, 52b respectively. While the front side key top 51a projecting over the front side and the back side key top 51b projecting over the back side are inserted into the opening parts 52a, 52b, respectively, the key tops 51a, 51b are kept movable vertically in the front side key cabinet 5a and the back side key cabinet 5b.
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