| 摘要 |
PURPOSE:To simplify register business by setting a value, whose fraction is dropped or raised, at a claimed amount, and writing the dropped or raised fraction amount into a recording medium as the residual fraction amount of a next transaction. CONSTITUTION:Before the start of the commodity registration of a customer, by reading a magnetic card 30 possessed by the customer, a residual fraction amount 32 (X) recorded on the card 30 i set at a last residual fraction amount buffer 23. At the time of the completion of the commodity registration, the total amount (Y) of purchased commodities is set at a purchased total amount buffer 24. Here, the residual fraction amount X is subtracted from the purchased total amount Y, and its result (Z) is set at a temporary buffer 25. Next, according to the number of fraction digits set at a fraction digit number presetting area 26 beforehand, the value Z of the fraction amount is raised, its result is set at a claimed amount buffer 21 as a claimed amount (P), and a raised fraction amount (Q) is set at a present residual fraction amount buffer 22. Further, the fraction amount Q is written on the card 30. |
