| 摘要 |
The device has a base plate (1) fixed in a case cover and provided with an aspiring cavity (2), an aspiration pump and an electronic control circuit connected to a power supply, where the circuit controls electronic and mechanical functions. The cavity is placed between two rows of balls (3, 4) installed in a hole of the plate, where the hole has a diameter lower than the diameter of the balls. The balls are placed between the base plate and a support fixed on the base plate, where the device is in the form of a computer mouse.
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