| 摘要 |
PURPOSE: A one handed keyboard is provided to improve the spatial utility and the convenience of a user while securing the function of an existing keyboard. CONSTITUTION: A key part is composed of keys on a main board. The keys are arranged in a range to which fingers of one hand reaches. The key part is composed of an arrow key part(130), a special key part(140), a character key part(150), and a functional key part(160). The special key part is arranged at the left lower part of the arrow key part. The character key part is radially arranged at the upper side of the arrow key part. The functional key part is arranged at the outer circumference of the character key part.
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