| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a point control device for a computer which is small-sized and has high operability about a point control device being one of input devices for electronic equipment such as CAD and a personal computer. SOLUTION: A sliding plate 20 having selection and execution switch buttons 21 and 22 is arranged at the top end of a track ball 11, and the track ball is made to rotate by sliding on the plate 20 in every direction so that the movement control of a point and a selection or execution operation can be performed.</p> |
