Is a device that feels good, easy to use with your mouse, move the pointer to different positions on the screen, or simply that the perilous position pointer. While the eyes on the monitor, you can use a tool to drag the mouse back and forth. The distance and the direction is relative, and it's the same as you move the mouse.The mouse can be divided into two types, mechanical, and optical. A mechanical model using the roller with weight and friction fit. When I move the mouse in any direction will cause the roller moves back and forth in that direction, but in the current roller mouse is rarely used.
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