| 摘要 |
<p>PURPOSE:To control the motion of a cursor in detail, by providing a switch which varies a ratio between the operating travel of a mouse and the travel of the cursor on a CRT moving interlocking with the above travel. CONSTITUTION:An encoder 1 is one on which concentric slit groups are provided, and the slit on the encoder 1 selects either an outer, a center, or an inner side by a second switch 5 on the mouse. To increase the moving quantity of the cursor for that of the mouse, the slit group at the outermost side of the encoder 1 is used, and the slit group at the inner side is used to decrease the moving quantity of the cursor.</p> |
