The present invention’s composite-to-metal attachment methodology\u2014bolt-free and adhesive-free\u2014features the implementation of an intermediary structure containing metallic fibrous material. Such supports include beds, supports for a mattress or a seat, such as a sling-type seat found on wheelchairs. The oxide semiconductor layer includes a channel formation region and an n-type region in contact with the source electrode layer or the drain electrode layer. The intermediate data is copied to both a first and second medium to produce a primary and auxiliary copy, respectively.