| 摘要 |
<p>An input device for a computer system comprises a touch sensitive surface or pad 21 for providing signals representative of the position of a user's finger. Movement of a cursor on a display screen of a computer system is controlled in response to a user's finger moving over a defined cursor control area 63 of the surface, e.g. so that it is displaced by an amount related to the displacement of the finger and to finger speed. Once the cursor has been correctly positioned a short tap on the area 63 generates an execution signal to instruct the computer to carry out the instructions determined by the prior cursor movement. The touch-sensitive surface also has a plurality of discrete areas 65,67,69,71,73,75,77,79 adjacent the cursor control area which act as two position switches and generate control signals of the type for which discrete push button switches are generally employed. <IMAGE></p> |
