| 摘要 |
An electronic device having a multi-functional pointing device of a track ball in which a connecting part is arranged through which a shaft is connected so that the shaft is connected to the pointing device of track ball. When the shaft moves and pushes, the pointing device of the track ball swings correspondingly . So the track ball provides different operating interfaces so to alleviate the problem that a user needs to have a different pointing device of a track ball with a different control condition.
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