| 摘要 |
<p>A pointing device comprises a substrate with an electrically conductive surface (36) and a resilient return member (12). The return member resiliently supports a resistive surface (20) to contact the electrically conductive surface (36) in a pressed mode when a force (23) is applied to push and deform the return member against the electrically conductive surface. The return member (12) is made of a resistive rubber material. The resistive surface (20) has a voltage variance and is curved to be rocked on the electrically conductive surface (36) in the pressed mode. The voltage variance is detected on the electrically conductive (20) surface and a variable signal is generated and processed. In a specific embodiment, a dome switch is disposed between the resistive surface and the electrically conductive surface to provide a drag function.</p> |
