| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a means preventing complete loss of data even if failing in data storage. <P>SOLUTION: This data storage device has: a storage part having a prescribed storage area; and a writing/reading control part dividing the storage area into a plurality of small areas, imparting a management number to each the small area to manage the storage part, imparting an update code showing update order of the data to the data, sequentially writing them into each small area in prescribed order on the basis of the management number, and adopting the data decided that they are latest on the basis of the update code when reading and using the data stored in each small area. <P>COPYRIGHT: (C)2007,JPO&INPIT |
