An electronic data management system capable of preventing confusion due to transfer of electronic data, even if electronic data attached with original attribute is transferred is provided. The voltage generating circuit includes a first node. Five such identifiers are disclosed, with functionality to updownload the media files one or more at a time from a PC or a networked server. A media file controller multiplexes the intermediate formatted data to generate a bit stream of voiceimage data based on the codec information on the voiceimage data. When a control method is changed beforeafter the registration sensor in this manner, the speeding-up and noise reduction of the sheet feed operation are realized.