An integrated circuit module allows volatile data generated by applications to be stored within volatile data files in the volatile memory. The above display element is composed of simple and easily available members, can be operated with a low voltage, exhibits high display contrast and satisfactorily high reflectance for the white display, and is reduced in the fluctuation of the white reflectance. The enclosure may include one or more blow-molded structures, such as a door panel, a wall panel, a roof panel, a floor panel, other panels andor other blow-molded structures. Moreover, since the thickness change of the sliding part is minimized, the defective rate of the part size can be reduced and its quality can be improved. The fastening flange can have a rigid contact area for contact with a socket, and the sealing element can have a surface seal and a raised molded seal on a partial surface thereof.