Disclosed is a polymeric electret film as well as the method of manufacturing the same. The packaged semiconductor device includes a secondary chip and a primary chip, with the secondary chip communicating with the primary chip through signal drivers. The present invention enables a user to perform other activities by freeing up the user’s hands while enabling the user to enjoy music or other recording, communicating by a cell phone etc. Electrodes are disposed over the respective resistors for fixing a resistance of the resistors, the electrodes being made of the same material as that of the gate electrode of the MOS transistor. The wide area network uses distributed data processing for the collection and analysis of related area wide restaurant operations for use in management and control. Also disclosed are dispensers that incorporate these heaters.