Abstract: The telewriting device enables exchange of graphics and voice information in real time with another such device via an external data communication line. The device comprises means for exchanging voice data, display means having a display surface, means for active telewriting input on the display surface, and interface means assuring the exchange of data input and output over the external data communication line. The device further comprises a first control unit connected to the interface means by a first link for managing exchanges of data between the interface and peripheral data-input and data-output means and a second control unit for managing manuscript trace data and display thereof, linked to interface means via a second connection independent of the first link, for sending and receiving manuscript trace data.