| 摘要 |
PURPOSE:To connect a multifunctional additional device through a small number of input/output ports and use it by using signal lines for sending signals from a copying machine frame to the additional equipment and signal lines of a control panel in common. CONSTITUTION:A console display matrix circuit 3 and a console key matrix circuit 4 are connected to a one-chip microcomputer 1 through a source driver 2, sink driver 5, etc. A display device for the quantity of copies and a light emitting element group which displays reduction/enlargement magnification, form size, copy density, etc., are connected to the circuit 3 among signal lines of P8- P15 through the driver 5. A photocoupler, etc., are provided between signal lines connected to the P8-P15 of the computer 1 through the driver 5 and a signal line to P21 to output signals to an automatic original feeder and an automatic gathering device connected to the output lines. |
