| 摘要 |
PURPOSE:To remarkably simplify the wiring and to increase the reliability, by using light for the transmission and reception of the information between the control panel section and the circuit board section. CONSTITUTION:The control panel is provided with various switches and terminals of variable resistors, and the actuators 14-23 respectively corresponded are provided at the cross point of the matrix between the input signal lines 12, 13 and the scanning signal line 11, the signal of the input signal lines 12, 13 is parallelly read in with the sequential signal to the scanning signal line 11 from the microcomputer 10, signal processing is made with the microcomputer 10 and it is output as the serial code signal with the light emitting diode 24, the optical signal is received with the photo diode 31 at the decode circuit and processed at the program of the microcomputer 30, and decode signal is set to the latches 34, 35, or switches 36, 37, allowing to set the attenuation of the attenuator 33 or to control ON, OFF of the switch. |
