| 摘要 |
A computer having an estimating capability estimates, where one data file is shared by a plurality of application programs, application programs to be executed when a given data file is designated, thereby simplifying user operations. The computer includes a storage device for storing history of computer operations performed by a user; a display device for displaying indications such as icons; an input device such as a mouse for selectively designating any of the icons displayed on the display device; and a control device for executing an application program when an icon corresponding to that application program is designated by the input device. In operation, the application program to be executed upon designation of a data file is altered by the control device in accordance with history of computer operations stored in the storage device. In that case, the icon shown to correspond with the data file is replaced by another icon corresponding to the altered application program to thereby notify the user that the application program started from the data file is now altered.
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