| 摘要 |
PROBLEM TO BE SOLVED: To solve troubles that the display of price information of many commodities arranged on commodity display racks in a store can not be changed in time because of much time required for simultaneously changing the prices of many commodities and that price information can not be automatically changed when communication between a master computer and a price display device is disabled due to some faults. SOLUTION: The price information of respective commodities is previously stored in respective price display devices 5 and these price information data are changed by the devices 5 at a proper changing timing. Thereby time required for simultaneously changing the price displays of plural commodities is shortened. Even when communication between a price information preparing device 1 in the master computer and respective price display devices 5 is disabled, the price displays can be changed. |
