Importance

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Abstract

A computer input device is comprised of an upper shell a center body and a lower shell, wherein the upper shell is operated so to slide along x axle and y axle, thus the object of controlling the movement and positioning of a cursor on a computer screen is achieved. A structure for detecting the displacements on the direction of x axle and on the direction of y axle is arranged inside the computer input device, and an x axle photoelectric set and a y axle photoelectric set for detecting the action of optic grid piece is also arranged inside the computer input device, and the structure for detecting the displacements on the direction of x axle and on the direction of the y axle is arranged on the same plane by a design of bracing wires, thus the width of the whole structure is became thinner, and volume of the computer input device is reduced so that the computer input device of the present invention may be proper installed on the notebook type personal computer.

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First Claim