| 摘要 |
PURPOSE:To restore easily and accurately a state at the optional time of an inputted command sequence by executing a storage processing command corresponding to an input command when the command is inputted. CONSTITUTION:A command processing part 2 discriminates whether it is necessary for the command inputted from a data input terminal 1 to restore the state or not; and if it is necessary, the storage processing command corresponding to this input command is read out from a command dictionary 6, and this storage processing command is executed by a program processor 3 to store designated data in a data file 4. When a state restore command is inputted, the command processing part 2 reads out a restore processing command, and this restore processing command is executed by the processor 3, and data stored and preserved in file 4 is read out to restore the state at a designated time.
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