| 摘要 |
The invention concerns a wrist-supporting accessory (1) for computer keyboards (2) of the kind that comprise a space bar (4) adjacent a front border portion (3) on the board. The accessory comprises a bottom plate (5) and a flange (6) directed rearwardly from the front edge of the plate, a recess (14) delimited by two spaced-apart lateral edges (12, 13) being formed in said flange (6). Bearings (16, 17) on either side of the recess support a control roller (18) housed in the space underneath the flange (6), said control roller arranged for rotational and translating movements and being connected to a decoding device (19) hidden underneath the flange (6). By means of the part of the roller (18) that is exposed in the recess (14), a pointer may be shifted between various coordinate positions on the screen of a monitor. In the same recess (14) is also arranged two click buttons (20) for transfer to a computer of commands and the like. |
