 of each of the data transferring and receiving apparatuses may identify, upon selecting the information concerning the presence of the data indicated on the display/input unit by the input operation unit, the ID number of the operated input operation unit and may check for management information in the management table in correspondence with the identified ID number. If there is no management information registered in the checked management table and the information concerning the presence of the data displayed on the display/input unit is selected by the input operation unit, the controller may register the management information representing the information concerning the presence of the selected data in the management table corresponding to the 