| 摘要 |
PURPOSE: A shopping mall management system is provided to supply the information of various products on the shelf by using a power module. CONSTITUTION: A power supply device(240) outputs a power source. The power source is provided to shelf display devices(202,212,222,232). Power modules(201,211,221,231) are combined in each shelve. A power module comprises a plurality of ports. The shelf display device is attached to a plurality of ports. The power module supplies the power to the shelf display device. |
