SALE METHOD AND SYSTEM EMPLOYING PRODUCT PRICE VARYING DEPENDENT UPON VALID DATE OF PRODUCT

摘要

A sales system includes a bar code scanner, a time stamp bar code adaptor, and a point of sale (POS) terminal. The time stamp bar code adaptor is configured for receiving the bar code scanned by the bar code scanner, extracting the country of origin, the manufacturer code, the product code, the date of production, the valid period, and the ID from the received bar code, and generating a sub code indicative of a ratio of a period, having elapsed from the date of production, to a point of sales, to the valid period. The POS terminal is configured for managing a product code table and a time stamp code table containing discount rate information, and calculating a discount price based on the elapsed period using the bar code and the sub code provided by the time stamp bar code adaptor.