| 摘要 |
<p>A keyboard assembly and a keyboard switch are presented in which the keyboard switch is a layer of flexible insulating material with circuit configurations thereon and an array of flat topped protrusions which serve as key switches to effect a snap action contact with tactile feedback between a conductive element on the key switch and another conductive element. Preferably, the areas between the protrusions on the insulating layer are securely clamped relative to a backing or stiffening board, and the protruding key switches are operated by hinged key actuators which make off center contact with the protrusion.</p> |
