| 摘要 |
This device comprises an encoder for transferring data of X axis and Y axis by moving according to the rotation of a ball placed under a mouse case, and Z axis encoder (8) for operating when the case inclines regardless of rotation of the ball. The Z axis encoder comprises a ring-shaped body (9), several contact points (10), a contact bar (11) for rotating in the center of body, a contact pendulum (12) for always keeping perpendicularity to the bar (11), a conductor (13) connected with contact points. |
