| 摘要 |
PURPOSE: To provide the security device of an equipment with stored confidential data for which it is difficult to invalidate a cover open switch. CONSTITUTION: This device is provided with a CPU 31, a first cover open switch SW1, a second cover open switch SW2, at least one transistor to be turned on/off accompanying the changeover of the first cover open switch SW1 and at least one other transistor to be turned on/off accompanying the changeover of the second cover open switch SW2. The CPU 31 receives interruption signals generated by at least two transistors and deletes internal data. When a cover is opened, the on/off of at least two of the plural transistors are switched, the interruption signals are inputted to the CPU 31 and the CPU 31 deletes the internal data. |
