| 摘要 |
The present invention, as shown in Figure 2, provides multifunctional key (2 0) adapted to be used in input and output devices. The multifunctional key comprises a touch surface (22) and a display means (32) adjacent to the touc h surface wherein the display means is adapted to changeably display signs. Keying in the multi-functional key generates an electronic signal corresponding to the sign currently displayed on the touch surface. The display means is preferably made of LED matrix.
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