| 摘要 |
<p>PURPOSE:To improve the operability and the quickness of the operation at the time of carrying by operating a portable information processor in any place of the use. CONSTITUTION:A device main body, a display device, and a keyboard are constituted as one body, and not only thumb keys 2 and 3 are arranged on the front face but also keys 4a to 4d and 5a to 5d are arranged on the rear face to perform the key operation. Thumb keys 2 and 3 are operated with only right and left thumbs, and eight right and left keys arranged on the rear face are operated with eight other fingers. Positions of keys on the rear face can be arbitrarily moved and fixed in accordance with lengths of operator's fingers. Key input is changed corresponding to the variation of the stroke due to extension of the stroke of a push button of each key on the rear face. The curve shape having the axis of revolution, which is supposed to be the second joint of an operator's finger, as the center of curvature is given to each key on the rear face.</p> |
