An electrical connection structure having connection elements which electrically connect a movable part to a fixed part of a microelectromechanical device, for example a microactuator. This storage apparatus includes a cache memory, a first controller for controlling the writing of data in the cache memory pursuant to the write command, a second controller for controlling the writing of the data written in the cache into the storage devices, and an encryption engine for encrypting data pursuant to the write command. The separation process andor the perforation takes place in such a way that a relationship is produced between at least one respective information region comprising further items of information and a predetermined number of postage stamps. After the assembly, the pair of blades are engaged in the pair of recesses and the guide projections are engaged in the storage recesses so that the guide projections cover the pair of blades thereby preventing the pair of blades from being deformed. The reflective surface portion of the detecting wheel reflects the infrared rays incident thereon toward the sensor.