| 摘要 |
PROBLEM TO BE SOLVED: To provide an information terminal apparatus which can automatically changes a plurality of power supply routes depending on the condition. SOLUTION: A telephone apparatus 1 for transmitting and receiving information via a telephone circuit 2 comprises a secondary battery 7 for supplying the power source voltage to the telephone circuit 2, a charger 10 for charging the voltage stored in the secondary battery 7, and a connector 1a which can connect an interface cable 8 including the power source supply line for supplying the power source voltage to the telephone circuit 2. Therefore, consumption of the secondary battery 7 used for the telephone apparatus can be minimized by receiving the supply of power source from the power source supply line via the charger 10 or interface cable 8. |
