| 摘要 |
PURPOSE:To realize system management with resulting high security, by storing an arbitrary user operation procedure as a password in a storage means. CONSTITUTION:A user stores the procedure of a user operation assumed arbitrarily in a CMOS memory 4 in advance. Afterwards, when a power source is applied and a processing is started, the content of a memory 4 is shifted to a prescribed area according to the content of a ROM in a main memory 3. Next, a CPU displays messages waiting input on a CRT7. Then, the CPU2 decides whether a processing procedure to be executed by the user is executed by the same processing procedure as the one by which the content of the memory is shifted to the prescribed area, at every processing procedure. When even one processing procedure out of procedures executed in order is different from the processing procedure of the memory 3, the CPU displays an ERROR on the CRT, and interrupts the processing. The CPU2 does not advance the processing to fetch an OS stored in the memory 3 until all of the processing procedures coincide with the processing procedure of the memory 3. |
