| 摘要 |
PURPOSE:To realize the prevention of incorrect input, by deciding whether or not an input code is compared with a reference value through the use of a key. CONSTITUTION:The information having the input code from a keyboard 1 is compared with a prescribed code stored in a memory 3 at a code comparison circuit 2. The prescribed code is a secret number such as deposit payment code. When both codes are not equal, the input information is transmitted as it is. When both are equal, that is, the check is required, then the information is given to a comparison circuit 5 comparing the values and to a key 4. When the key is connected to the input device, the input information is transmitted as it is. When the key is not connected, the information is compared for the levels. In inputting a large value, the key 4 is required and the incorrect input by the operator can be prevented. |
