A system for establishing wireless connection between a peripheral device and an intelligent device in a multi-computer environment having a plurality of intelligent devices is disclosed. The second high-temperature functional area is arranged opposite the first low-temperature functional area. The open cells of the intermediate layer permit intrusion of fluoropolymer therein. Therefore, the thickness of a tunnel insulation layer can be kept thin, and the threshold voltage of a nonvolatile memory cell including the floating gate can be increased. The allocation of data transmission signal space includes a data transmission segment.