| 摘要 |
In a CAD mouse (1), two mechanically latching electronic hand-wheels (6,7) are arranged for generating coordinate values for two dimensional drawings. Three hand-wheels (6,7,8) may be provided for generating coordinate values for three-dimensional drawings. The hand-wheels are used to move the cursor to allow comfortable creation of the two or three-dimensional coordinate values. A graphics keyboard (2) may be provided for operation by the other hand.
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