In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The cable may include an outer conductor, which, in turn, includes aluminum with a tin layer thereon. A longitudinal groove is disposed in the base between the first and second endplate. The files of the file system of the snapshot are mapped at a virtual machine level, and the resulting file mapping information is used to backup the files of the virtual machine at a base machine level. The system includes signal-processing means distributed between two different modules and each of said modules comprises at least two components on a substrate in a case which is designed to be mounted on a printed circuit, said modules exchanging intermediate signals on an interface provided for said purpose. The at least three sub-pixels have mutually different areas, so that one sub-pixel among the at least three sub-pixels has a maximum area which does not exceed a total area of the remaining sub-pixels.