| 摘要 |
PURPOSE:To prevent the destruction of data by registering the respective data transferred to a data storage device in a non-volatile memory, receiving to the last and writing in the data storage device. CONSTITUTION:A data contents destruction preventing device 4 has a back up power source 5 and is provided with registers 41, 42 for temporarily storing the data transferred from a channel 3. The data written in a magnetic disk device 6 from a CPU 1, a main storage device 2 is temporarily stored in the registers 41, 42. The stored data is received to a final part, thereafter, transferred to the magnetic disk device 6. The data contents destruction preventing device 4 has the power source independent of the CPU 1, the main storage 2 and the channel 3, so that even if any of the CPU 1, the main storage 2 or the channel 3 power is disconnected, the data destruction preventing device 4 is not disconnected in power but continues to execute a normal data transfer after the power source is recovered. |
