| 摘要 |
PROBLEM TO BE SOLVED: To reduce the labor required to make a housekeeping book by using commodity purchase information in a supermarket or the like to make the household account book. SOLUTION: Since names, quantities, unit prices, prices, etc., of commodities are inputted on a register 31 or 32 at the time of purchase of commodities at a supermarket 30, a customer database 41 where purchase data of each customer are recorded is generated by a host computer 40. Each customer 10 obtains commodity data of commodities purchased at the supermarket 30 from the customer database 41 through a server 20 by a personal computer 11 and inputs other required income/outgo data to make a housekeeping book by the personal computer 11. |
