| 摘要 |
PROBLEM TO BE SOLVED: To secure the security with respect to an information leak with a simple constitution by electrically detecting a state wherein an electrically connected contact position is separated. SOLUTION: The security device is equipped with, for example, a disassembly detecting circuit 101, an oscillation circuit 102, an AND circuit 103, and a buzzer 104 which partially constitute a part of a circuit mounted on a printed board. This disassembly detecting circuit 101 outputs a disassembly detection signal ('H' (high) state) by electrically detecting a device main body 1, i.e., a case being disassembled. The oscillation circuit 102 generates pulses for making the buzzer 104 sound. The AND circuit 103 supplies the pulses of the oscillation circuit 102 to the buzzer 104 when the disassembly detection signal outputted by the disassembly detecting circuit 101 is 'H'. The buzzer 104 is made to sound according to the pulses outputted from the AND circuit 103.
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