| 摘要 |
PURPOSE:To omit such a case where the data on the latest number of editions must always be held by a subordinate processor by performing the unitary control of the latest data produced and updated by each device in a system via a main processor and at the same time inquiring the number of editions of held data before a processing request is given to the subordinate processor. CONSTITUTION:A main processor 1 is required to request a subordinate processor 2 to process data on the latest number of editions. In this case, an edition number informing part 23 retrieves each data stored in a data storing part 22 and informs the retrieving result of the data on the inquiry to the processor 1. When the relevant data is not stored in the processor 2 or not equal to the latest number of editions if stored, the latest number of editions on the relevant data stored in a data storing part 12 is transferred by a data transfer part 14 to the processor 2 via a communication channel 10. |
