| 摘要 |
A computer unit with excellent backup function is realized. A backup operation system is set, and based on the setting, a data file under editing or the like is saved in a backup section. The backup operation system is distinguished through existence of execution of a backup operation, execution timing of the backup operation, an object to be backed up, a backup destination, and the like. This prevents data loss in the case where a computer unit is hanged, or in the case where trouble of the computer unit, crash of a terminal side data storage section, or the like occurs.
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