| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electronic book and a portable information equipment capable of realizing functions such as rotating, magnifying, reducing and scrolling of a map picture with a human interface having satisfactory operability and to provide an information storage medium to be used for them. SOLUTION: The electronic book includes a display part capable of displaying a map picture. The executing instruction and the manipulated amount of at least one operation of the rotating, the magnifying, the reducing and the scrolling of the map picture can be inputted simultaneously by operation histories of fingers which are brought into contact with the display part. Then, the magnifying instruction and the magnifying amount of the map piture can be inputted by an operation making two fingers more distant. Moreover, the reducing instruction and the reducing amount of the map picture can be inputted by an operation brining the two fingers closer. Furthermore, the rotating instruction and the rotational amount of the map picture can be inputted by an operation making one finger rotate around another→finger.</p> |
