| 摘要 |
PROBLEM TO BE SOLVED: To solve problems such as difficulties of the memorization of accurate key positions for smoother operation by a beginner or a visually handicapped person since a keyboard used for a personal computer or a word processor has only two projections serving as markers while it has a great number of keys. SOLUTION: A seal with a projection serving as a marker is adhered to an optional key in the keyboard. For instance, the seal with the projection has one or a plurality of semicircular projections 2 arranged on a transparent disc seal with a diameter of about 10mm. COPYRIGHT: (C)2004,JPO
|
