A method for driving a display device including pixels each including a display element and a transistor is proposed. The drive unit is rotably mounted to the output unit and they are so connected that at least two hydraulic pressure chambers transmit relative rotation forces. A controller can transmit a call connection request signal with the first maximum transmission power or with the second maximum transmission power depending on intensity of the reception signal when user tries a call connection. The electrical transmission signal is transmitted to one of a second set of channels through a multichannel switch of an adapter in accordance with a state of the multichannel switch. Pass-dependent addressing is provided to correctly address registers and memory for different pieces of data.