A polyimide film-laminated body is composed of a metal layer and an aromatic polyimide layer formed by casting a polyamic acid solution composition, comprising 3,3\u2032,4,4\u2032-biphenyltetracarboxylic dianhydride as an essential tetracarboxylic dianhydride component and with introduction of a specific diamine component, onto a metal foil. The burr includes a cylindrical body portion, a plurality of teeth disposed on and protruding outward from the outer surface thereof, and at least one annular channel formed in the outer surface thereof. First, a temperature history during a use cycle of the food processing equipment is created. The comparators in each input data path output to a multiplexer, which picks between the two comparator outputs depending on the logic level of the previously received bit.