| 摘要 |
PURPOSE: A keyboard is provided to accomplish better portability without damaging to handling properties of a mouse. CONSTITUTION: On a thin-type mouse case, a part of an upper surface opposing a user's palm is formed in downward concave shape. A mouse includes a plate-shaped member. The plate-shaped member complies with the downward concave-shaped upper surface of the mouse case. The plate-shaped member is mounted in both directions of upward convex shape and downward concave shape, on the downward concave-shaped upper surface of the mouse case. |
