Audio is adaptively associated with speakers, depending on the speaker configuration that is present. Each of the lugs comprises a conductive foil with a surface and a PTC layer disposed on the surface of the conductive foil. Upon operation of the operation key that is arranged with overlapping with an electrostatic pad, a direction input for moving a screen display can be suppressed from being erroneously provided. Related systems, apparatus, methods, andor articles are also described. An auxiliary charge pump is provided which receives its supply voltage from the output of the charge pump and which is likewise controlled by the clock generator. Part of the alkyl alkoxy sulphate surfactant is a branched material, resulting in improved physical stability of the compositions at low temperatures.