| 摘要 |
PROBLEM TO BE SOLVED: To improve the operability and performance in use for users. SOLUTION: When new application programs cannot be installed from external recording media such as a memory card or the like, according to the remaining capacity of a storage means (internal storage means), the system reserves a storage area by saving and shifting application programs have been automatically stored in the storage means to external recording media, and then permits the new additional application programs to be installed into the storage means from the exernal recording media.
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