| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the operability of a vending machine with which a data carrier such as an IC card or IC tag can be used for article purchase, without complicating the structure. <P>SOLUTION: When a data carrier 2 is brought near to a reader/writer 12 for reading/writing amount data after a normally operational article selection switch 15 for selecting an article to be purchased is operated, adjustment processing is performed in a batch in which the reader/writer 12 reads amount data, the price of the selected article is subtracted, and update data corresponding to the remaining amount after the subtraction is sent to the reader/writer 12, which writes it to the data carrier 2. Every time the article selection switch 15 is operated, an effective time setter 5 sets effective time for the reader/writer 12 to read the data carrier 2. <P>COPYRIGHT: (C)2007,JPO&INPIT |
