| 摘要 |
<p>PROBLEM TO BE SOLVED: To immediately identify overlapped data. SOLUTION: An A system computer 1 or B system computer 2 preserves state change data in a state change information preservation area 10 at the time of the operating mode of the present computer and further preserves the state change data, which are preserved in the state change information preservation area 10, in a backup area 11 on the other hand. When the present computer is turned into operating mode, the output buffer data in an output buffer area 13 preceding to operating mode switching for prescribed time are compared with the backup data in the backup area 11 and when the presence of the same state change data is discriminated, these data are outputted to a printer 4 so as to be identified as the overlapped data.</p> |
