| 摘要 |
1522587 Merchandise checkout system NCR CORP 28 June 1977 [12 July 1976J 26983/77 Headings G4V and G4H A merchandise checkout apparatus, in which a credit card with an available balance recorded thereon is used by a customer for at least part payment of purchased items, including a data terminal device for receiving data representing the amount of each item and for totalling the amount of the transaction; a card identification device 24, for reading the available balance, which is connected to the data terminal device 20 and is positional adjacent thereto so as to be operable by the customer simultaneously with the operation of the data terminal device by a checkout operator; computer means 38 arranged to compare the available balance with the total amount of the transaction and arranged to operate writing means 74 in. the card identification device to record a new balance or to indicate, on the data terminal device, a cash amount payable if the total amount of the transaction exceeds the available balance. |
