Electronic data processing arrangement has switch which connects processing device to data buffer as well as terminal

摘要

External and internal data are processed using two respective processing devices. A switch (4) selectively connects one of the two processing devices to a terminal (6). The switch (4) also connects the processing device (2, 3) that is connected to the terminal to a data buffer (5) for buffering the data transmitted between the first (2) and the second (3) processing device.