| 摘要 |
PURPOSE:To eliminate demerits such as heavy weight and inconvenience, make it unnecessary to input a personal identification number at every use, and make it impossible to reuse due to additional purchase of a front panel and so on. CONSTITUTION:A CPU 3 in a main body 1 compares a personal identification number transmitted from a memory 10 in a front panel 2 with that in a memory 6, and makes this device operatable by turning on the power of the main body when they coincide with each other. If they do not coincide, comparison is made twice further, and if they do not coincide yet, the operation of the device is stopped to make it unusable. |
