| 摘要 |
PURPOSE:To confirm correct communication by using a means which reads in the descending data signal sent from a center and a means which checks the state of reception of a descending data with the setting of the address of a prescribed terminal device. CONSTITUTION:A communication buffer 1 is connected to a microprocessor 2, and a keyboard 3 is connected also to the processor 2 via a keyboard controller 4. A terminal controller 5 is connected to an output port led to the TV receiver of a terminal device through a waveform shaping circuit 6. Then the controller 5 controls the power supply of the terminal device to read the address data sent from the output port into the processor 2. A printer controller 7 and a display controller 9 control a printer 8 and a display 10 respectively. An MODEM11 functions for the connection to other computers. |
