A pair of opposing thin plate sections, movable sections, and fixed sections for supporting the thin plate sections and the movable sections are provided on a ceramic substrate. Each bus is adapted to transmit corresponding ones of the address signals, the command signals, and the select signals to the corresponding memory module. An encryption key generation unit uses the information acquired by the unique information acquisition unit to generate an encryption key used when the wireless device makes wireless communications. Finally, at each receiver, despreading received data by the matched filters, and separating mutually interfering signal with a linear combiner and a BLAST detector to obtain the diversity gain. The strained semiconductor can increase the charge mobility associated with the transistor.