| 摘要 |
A keyboard with adjustable support devices for supporting the keyboard at several levels is provided. Each support device includes a leg able to rotate along the bottom of the keyboard. The angle between the axis of rotation and the bottom plane of the keyboard has a value other than 90 degrees. The leg is selectively posed at the first or second state. When the leg is at the first state, the tilt angle between the keyboard and a desk is smaller. When the leg is at a second state, the tilt angle between the keyboard and a desk is larger. There are multiple support devices provided on the bottom plane of the keyboard. Therefore, the keyboard provides multiple variations in angle and height by adjusting the positions of the legs.
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