A flexible earhook for positioning an earphone adjacent a wearer’s ear, the earhook including a mounting element capable of being provided with the earphone. The processor is disposed within the storage device and is adapted to receive multiple commands as a command block over an interface. The ring has a slot therein, the ring thereby being closable to make a solderless connection to an outer conductor of the cable. A polymorphic IT function framework can receive a request identifying the node and a driver program via the individualized selection mechanism to perform a user-selected polymorphic IT function. Difference is great between a potential VA=VA occurring at a coupling node when x=1 is given to the ferroelectric capacitor Cs of s=0 and a potential VA=VA occurring at the coupling node when x=1 is given to the ferroelectric capacitor Cs of s=1.