| 摘要 |
<p>PURPOSE:To prevent such a failure that data is read or written in an unexpected area on a display and so on. CONSTITUTION:This coordinate input device is constituted so as to change the position coordinate of a cursor on the display of a computer on the basis of the amount of the rotation of a ball 4 by moving a mouse 1 by rotating the ball 4 fitted to the bottom part of the mouse 1, and the mouse 1 is provided with a stopper 11, and it is constituted so as to fix the position coordinate by preventing the rotation of this ball 4 by pressing the semispherical surface 12 of this stopper 11 against the ball 4.</p> |
