| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability of data without special hardware for backup by storing original data and spare data in a storage table in relation to each other. SOLUTION: An information processor 1 which uses required data to perform the software processing is provided with a first storage device 2-1, a second storage device 2-2, a data multiplexing register means 3, and a storage table 4. In this case, the first storage device 2-1 is provided to store original data, and the second storage device 2-2 is provided to store spare data which backs up original data and can be used for software processing, and the data multiplexing register means 3 stores original data and spare data in the storage table 4 in relation to each other. Thus, the reliability of data is improved without special hardware for backup even after the operation of the system.
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