| 摘要 |
The present invention provides a control unit of a computer system. The control unit of a computer system comprises a first storing device for holding written data while the power is on, a second storing device for holding the written data even when the power is off, and a power-off preserving device for powering off the system after transferring the data held in the first storing device to the second storing device. A control unit of a computer system comprises a first storing device for holding written data while the power is on, a second storing device for holding the written data even when the power is off, a power-off preserving device for powering off the system after transferring the data held in the first storing device to the second storing device, a number of window system processing devices, one of which being selected for refreshing graphic display by producing graphic display data based on the original data for the graphic display, a power-on resuming device for returning the data held in the second storing device to the first storing device, a window system judging device for judging the selected window system processing device, a refresh requesting device for requesting the selected window system processing device to refresh the graphic display after the data has been return to the first storing device, a system status holding device for holding information indicating the status of the computer system, a non-resumable condition holding device for holding non-resumable condition according to which the previous process substantially can not be resumed once the power is off even the stored contents in the storing has been resumed at powering on, a non-resumable condition judging device for judging whether the status of the computer system meets the non- resumable condition or not when the powering on operation is directed, and a program execution terminating device for terminating the program execution when the computer system is judged by the non-resumable condition judging device to meet the non-resumable condition.
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