Photolithography masks include an optically transparent substrate having a plurality of fiducial position aligning marks on sidewalls thereof. The heat-dissipating fan module includes a casing having an opening, the opening having a guiding device along an edge thereof, and a heat-dissipating fan fixed to one side of the casing and correspondingly disposed on the opening. Furthermore, the latched comparator circuit comprises a cross-coupled pair of transistors operatively connected between the first and the second output terminal for providing a positive feedback in the latched comparator circuit. The address control unit 2b controls address operations in order that the address area used by the PC card function control unit 3 shall not overlap the address area used by the PHS card function control unit 4 in the memory space which is accessed by the information processing apparatus 20 through the PC card 1. The particular node is caused to configure the particular interface based on the configuration data without human intervention. The disc has a through-hole with a first end remote from the operating chamber and a second end opening into the operating chamber, the first end periodically overlapping the port as the rotor rotates.