| 摘要 |
<p>A portable calculator device for bank account management, having a keyboard with at least one function key (12) related to the desired payment method, and triggering a specific display sequence, a numeric keypad (10), and means (23, 25, 14, 21) operated by pressing the function key (12) and used to display an order number and input (10, 11) a transaction sum and the date.</p> |
