One embodiment of the invention relates to a method for forming trench memory cell structures having trench capacitors and planar selection transistors. The control valve unit has a valve body, a valve member disposed in an axially mobile manner inside this valve body, and an actuator unit that actuates the valve member. for use in a pressure sensor or a microphone, comprising two essentially flat surfaces being separated by a cavity being defined by a spacer, the distance between the surfaces being variable thus providing a displacement sensitive Fabry-Perot interferometer. The relocating thread then completes writing the other fields before it writes the relocated object’s classifying word, and any parsing thread repeats the size-determining routine until the uninitialized value is removed and it can therefore rely on other values in the block. The unit is received in the housing with the axis of rotation of the first roller radially fixed while the first roller is rotatably supported by the housing. The coupler uses two disk partitions in a flash memory, one acting as a disk for the real time operating system and the other acting as a user disk.