| 摘要 |
A computer is provided to efficiently control data transceiving between an external storage device and a processor by using a method using hardware in addition to security using software. A switch unit(30) switches the data transceiving through a connection port(40). The processor(20) outputs a control signal to the switch unit to make the data transceived through the connection part in case that a password inputted from a user input part is matched with the preset password. The switch unit includes a switch device(31) and an enable terminal(32). The switch device is switched based on a control signal applied to the enable terminal. The processor includes a logic gate(23), inputs each determination result to the logic gate by determining whether the password is matched with the preset password more than twice, and outputs the control signal to the enable terminal according to combination of the determination results.
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