| 摘要 |
PROBLEM TO BE SOLVED: To arrange a sales data processing device and a customer display without being restricted by cable connection.SOLUTION: A sales data processing device 10 transmits power by radio to a customer display 30, and transmits display data on a price of a commodity or the like by the radio to the customer display 30. The customer display 30 receives the power by the radio from the sales data processing device 10, and receives the display data by the radio from the customer display 30, and displays a screen for a customer by using the display data. |
