A scroll compressor has a housing, in which are provided fixed and movable scrolls for cooperatively compressing working fluid containing lubricating oil, an oil chamber storing the oil separated from the fluid, and a drive chamber in which a revolving unit for revolving the movable scroll is arranged. The card reader processes transactions when only one card is present in its operating field. A MOS transistor is formed on the integrated circuit substrate. The performance properties of the product may be enhanced by adding some additional difunctional reactant, e. Adjustments facilitated by the saddle provide for positioning the camera to have its optical axis maintained in a position normal to the tangential surface of a globe enclosure over almost any vertical or horizontal position of the camera. The method comprises reading a data from memory, and if the data matches an expected data key, determining the width of the memory.