| 摘要 |
PROBLEM TO BE SOLVED: To provide a less expensive keyboard that is small and slim. SOLUTION: The keyboard comprises a key-top 1, a click gum 2 giving a sense of clicking, a membrane sheet 3 arranged with contact and a set of input and output ports required, an additional membrane sheet 4 arranged with a set of input and output ports required, and a flexible circuit board 5. The click gum 2 has a first contact 23 at a moving part 22. The membrane sheet 3 arranges a second contact 31 and a third contact 32 connected at the contact 23, and a first and a second input and output ports 33, 34 connected to an external device. The flexible circuit board 5 is sandwiched between the membrane sheet 3 and the additional membrane sheet 4, which, in turn, connect the second input and output port 34 arranged on the membrane sheet 3 to a fifth input and output port 51, and also connect a fourth input and output port 42 arranged on the additional membrane sheet 4 to a sixth input and output port 52 arranged on the flexible circuit board 5. COPYRIGHT: (C)2004,JPO
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