| 摘要 |
<p>An electronic memory unit (1, 11, 12) comprising a storage (2) containing information to be used to check credit cards (10) and similar cards tendered as a means of payment. The memory unit (1, 11, 12) is provided with a memory space (4, 12) in which are successively stored at one point of sale and over a predetermined period of time, for instance corresponding to one business day, all data pertaining to all transactions made by means of credit cards (10) during that day. The stored transaction data are electronically transferable from the memory unit (1, 11, 12) to a terminal (23) which is connected to a computer (19). A main unit (24) which is adapted to be used together with the electronic memory unit (1, 11, 12) is provided with inputs (25, 26, 27, 28, 31) to connect card readers (9a) and a terminal (34) equipped with a keyboard, a printer (14) for printing out credit card sales slips (15) containing said transaction data, and electronic means both for comparison of the read credit card accounts number against data on the credit cards in the information storage (2) and for successively entering data on the performed transactions into the memory space (4, 12).</p> |
