| 摘要 |
A device of the present invention is a personal digital assistance device for communicating with another device via a telephone line which includes: a connection section for connecting the personal digital assistance device to the telephone line; a communication section for dialing a telephone number of the other device for communication with the other device via the telephone line to which the personal digital assistance device is connected by the connection section, for transferring data between the devices, and for disconnecting the telephone line; a control section for controlling the communication section; a voltage detection section for detecting a voltage of the telephone line to which the personal digital assistance device is connected by the connection section; and a determination section for determining whether the voltage detected by the voltage detection section is equal to or greater than a predetermined voltage. When the determination section determines that the voltage detected by the voltage detection section is equal to or greater than the predetermined voltage, the determination section turns on a power supply for supplying a power to the control section. <IMAGE> |
