y 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 registered 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 in correspondence with the identified ID number. In contrast, if management information representing the information concerning the presence of the data is registered in the checked management table, the controller may request the device on the network indicated by the management information registered in the management table in correspondence with the ID number to transmit data corresponding to the management information. In the aforementioned data transferring and receiving apparatus, the management table in which the management information representing the information concerning the presence of the data selected by the input operation unit is registered is provided on the network according to the ID number of the input operation unit. When the information concerning the presence of the data is selected by the input operation unit, the management information representing the information concerning the presence of the selected data is registered in the management table in correspondence with the ID number of the input operation unit. When the apparatus of the present invention or another apparatus is selected by the input operation unit having the ID number, the selected apparatus checks for the management information registered in the management table having the above ID number and requests the apparatus of the present invention to transmit data indicated by the management information registered in the management table having the above ID number. Further, in this data transferring and receiving apparatus, when the display/input unit is selected by the input operation unit, the management information registered in the management table in correspondence with the ID number of the input operation unit is checked, and a request is provided to the apparatus of the present invention or another apparatus indicated by the management information registered in the management table having the above ID number to transmit data corresponding to the management information having the above ID number. According to a further embodiment of the present invention, there is provided a data transmitting 