| 摘要 |
A general-purpose computer has a compartment for storing a pointer device, such as a mouse or a trackball, such that the pointer may be removed from the compartment and deployed for use. The pointer may be a mouse, a trackball, or other type, and may communicate with the host computer by a cable, an infra-red system, ar by an inductively coupled system. In one embodiment the pointer is a trackball device, in another a mouse device, and in another a combination device that may be used as either a mouse or a trackball. Other embodiments provide a polar input pointer device and a broadcast pointer device.
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