| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a compact keyboard with the number of keys to be used substantially reduced, while maintaining the same usability as an existing keyboard with which touch typing is possible.SOLUTION: One key is made to correspond to two or more characters or symbols and, for the purpose of switching between the characters/symbols, two or more types of operation techniques for which identification processing is possible by an operation of only one finger are permitted for one key.</p> |
