| 摘要 |
PROBLEM TO BE SOLVED: To make a system compatible with a configuration with a plurality of control units that have data in order to establish a system with the plurality of control units, each having its own data synchronized with server data.SOLUTION: A record control unit 16 of an accounting system 1 synchronizes its own control unit-side data with server-side data of a control server 15 and, if its own control unit-side data is not in synchronization with control unit-side data of another record control unit 16 connected to a local area network LN, does not validate its own control unit-side data.SELECTED DRAWING: Figure 3 |
