| 摘要 |
A hand-held pointing device (10) for use with an external device, such as a computer, the pointing device (10) comprising a body (11) having a hand grippable stem (13) and a head portion (12); the hand grippable stem (13) able to be gripped by a hand of a user; the head portion (12) associated with the stem (13), and rotatably mounting a ball (15); at least one control button (16, 17) mounted on the body (11); a sensor to produce electrical signals by movement of the control button (16, 17) and/or ball (15); and a communication channel to communicate the electrical signal to an external device.
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