| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily realize a resuming function or a history function, without having making each application program individually facilitate countermeasures on a processing, at a power source turn off time. SOLUTION: The start/end of each application program is managed in a shell 20 in a batch, so that each application program can be released from any individual event processing, such as the change of a power source state. Also, the execution history of each application program is recorded automatically in the shell 20 as history information, so that a resume function and a history operating function can be realized. Thus, it is not necessary to consider any individual event generated on portable terminal equipment at the time of developing each application program. Therefore, it is possible to reduce increase of the program size and to reduce program device developing man- hours. Also, the structure of the application program is simplified and to further improve maintainability results in further.</p> |
