| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a small-sized mouse-shaped input device with good operationality. SOLUTION: The device has a board-shaped projection 2 to be held by two fingers and placed vertically in the center of the top of a casing 1 constituting the mouse-shaped input device. Each of generally semicircular switch knobs 3 and 4 is provided on each side of the board-shaped projection 2 on the top of the casing 1. There are hollows 3a and 4a to be sensed by an operator's tips of fingers on the surface of the switch knobs 3 and 4.</p> |
