| 摘要 |
PURPOSE:To reduce the disappearance of data even in the case of a power failure by storing data in an external storage device at specific intervals of time and updating a file control area. CONSTITUTION:An information processor consists of a processor(CPU) 1 which performs various processes, a program memory 2 which consists of a ROM, a data memory 3 as a main storage device which consists of a nonvolatile memory such as a RAM, a hard disk 4 as the external storage device, a timer device 5, a display device 6, and a keyboard 7. Data obtained by the processing of the processor 1 are written in the main storage device 3 and the data written in the main storage device 3 are all written in the external storage device 4 at specific intervals of time to update the file control data in the file control area. Consequently, the disappearance of data at the time of a power failure is minimized. |
