| 摘要 |
PURPOSE:To provide a keyboard enabling a user to easily memorize key array and reducing user's depressing labor by changing key array/shape which is arranged by a flow from the upper left side to the lower right side in conventional array. CONSTITUTION:In the keyboard provided with a character key group to be depressed by a right hand and a character key group to be depressed by a left hand, a rhomboid key group constituted of 15 keys in total having rhomboid key tops and consisting of 3 stages and 5 columns surrounded by the combination of 4 horizontal and parallel lines with equal intervals and 6 vertical and parallel lines with equal intervals which are inclined to the inside on their upper parts and to the outside on their lower parts is used as a left hand key group and a key group symmetrical with the left key group about the vertical line is used as a right hand key group. Characters having correlation are allocated to plural charactes on a specific stage out of the upper, intermediate and lower stages in respective key groups and a specific column out of the 1st to 5th columns in respective key groups. |
