| 摘要 |
PROBLEM TO BE SOLVED: To improve an access speed when relatively small-sized data in a nonvolatile memory is frequently accessed. SOLUTION: When a first nonvolatile memory where information is written with a first relatively small write size as the unit and a second nonvolatile memory where information is written with a second relatively large write size as the unit are provided, a storage area relating to a first information group which is written mainly in sizes equal to or smaller than the first write size is allocated in the first nonvolatile memory, whereby the access speed to the storage area relating to the first information group can be improved in comparison with conventional methods. COPYRIGHT: (C)2006,JPO&NCIPI
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