A spring-loaded brake cylinder for commercial vehicles includes at least one spring-loaded brake piston that can be actuated by a pre-loaded spring and is supported in a housing. The terminals are arranged in horizontal pairs, and the internal cavity defines an air channel between each horizontal pair of terminals arranged in the two columns of terminals. In a variant a single common casing is provided for the direct connection between a plurality of electric conductors and respective counterparts, which may be contact elements which are also associated with respective electric conductors or bump contacts of a PCB. A subset of the sorted list of files is selected for compression, based on the position of the candidate files in the sorted list of candidate files. An output voltage is interpolated by controlling the first and second pluralities of switches. According to one aspect of the present invention, a method for operating a memory system with a non-volatile memory that includes a plurality of physical blocks and a plurality of data structures including an erase count block involves determining when contents of at least one data structure is to be updated.