The invention relates to a pressure sensor module, in particular for electrohydraulic brake system, with several pressure sensors arranged in a sensor housing that is connected with its flange surface to the mounting surface of a hydraulic housing in such a fashion that several pressure ducts arranged in the sensor housing and in the hydraulic housing are interconnected. The disclosed methods and apparatus selectively retain data in a hard disk drive. The gearbox further includes a parking brake that can be actuated by a gear change actuator and that serves to block rotation of the output shaft. The distal end of the stent loading member is slidable to a distal position past the distal end of the outer tubular member for receiving a stent and is further slidable toward the proximal end of the outer tubular member to a location past the stent deployment region for disengagement of a stent from the stent loading member. The identifying and assigning are repeated to assign levels to the nodes belonging to each next highest or lowest level of the table of contents. The pixels are grouped in a plurality of pixel subsets and are arranged to capture a plurality of time-separated lo-res images, which can be viewed sequentially as a movie or data from all the pixels can be used to form a hi-res still image.