| 摘要 |
An input pointer includes two top-surface switches and a rotary switch on the top surface of the main body, a protrusion on an imaginary center line on the bottom surface of the main body, and two bottom-surface switches at the sides of the protrusion. The two top-surface switches and the rotary switch are turned ON when pressed by a user's finger, whereas the bottom-surface switches are turned ON when the main body is tilted about the protrusion.
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