| 摘要 |
<p>PURPOSE:To eliminate the inconvenience of carrying about cash and to contrive the effective use of time, by equipping a liquid-crystal display plane, an input display means, and a storage means storing the input, for a credit card. CONSTITUTION:When a shopping card 1 is inserted into a house-side personal computer 11 and a menu determined is entered by a keyboard 17a, materials and quantities (number of pieces) required for the menu stored in a shopping floppy disk 13 are displayed on a CRT 14. These are inputted to the shopping card 1 to be displayed on a display plane 3 and stored in a memory 10. The card 1 is handed over a store, and then a credit number, materials, and quantities are read by a card reader 15 to be displayed on a CRT 16 of a personal computer 12. Then, on a shop side the displayed materials are prepared, the amount is entered by operating a keyboard 17b to be written in the card 1, a specification of amounts is printed out by a printer 18, and the shopping data is recorded to the computer. A customer drops in at the shop at the right moment to receive the goods and the specification of amounts, and the shopping card 1 is returned to the customer.</p> |
