LOCAL NETWORK SYSTEM

PURPOSE:To enable a trainee to see well the displayed contents of a large-sized display board for explanation by an educator in mass education through the use of terminal equipment, and simultaneously, to dispense with the transfer of these information. CONSTITUTION:A center device 1 constituted of a display and input part 11 consisting of a large-sized electronic board on which a character/pattern, etc., is displayed by an exclusive pen, and simultaneously, to which the character/ pattern, etc., can be inputted as information data, and a data transmitting part which reads the character/pattern, etc., displayed on the display and input part 11 and transmits it by radio, and the terminal equipment 4 constituted of a data receiving part which receives the information data of the character/pattern, etc., transmitted from the data transmitting part by radio, and a desk electronic board which displays the above-mentioned information data received by the data receiving part are provided, and in this local network system, the information data displayed on the large-sized electronic board of the center device 1 can be seen as well by the terminal equipment 4 at a position distant from the center device.