| 摘要 |
PURPOSE:To ensure the smooth shopping for customers by storing the counters in an electronic calculator after sorting them and displaying successively the stored data for each counter. CONSTITUTION:When a customer reads the data out of an electronic calculator at his/her actual shopping, the customer turns on a 'see' key of a key part 4 to set a read mode. In this read mode, one of plural counters stored in a RAM 9 of a display part 3 is displayed together with the total number of other remaining counters. The displayed counter is shifted every time a 'counter' key is turned on, and other counters stored in the RAM 9 are displayed successively with switching. Thus the customer can grasp the total counters before actually making purchases. Then the customers can accurately know the routes of plural counters in the supermarkets and the shopping districts even for the first time or despite the change of layout of the counters there. |
