A semiconductor integrated circuit has a logic circuit operated at a small power supply voltage of about 0. The demultiplexing system receives packets of a message, identifies a sequence of message handlers for processing the message, identifies state information associated with the message for each message handler, and invokes the message handlers passing the message and the associated state information. The chip incorporates a unified memory architecture that provides a high level of system performance while conserving memory bandwidth and chip size. This seat is especially comfortable and simple to manipulate and offers an ergonomically favorable arrangement in any adjustment position for the user, because of the enforced guidance system, and the linkage in connection with seat base part and backrest part. A routing path is established between the mobile networks using a Route Request message or a Neighbor Discovery message, or an association information manager, for data transmission.