| 摘要 |
PURPOSE:To relieve the problem of processing an input program and a data detected forcedly, by providing a switching circuit switching sequentially and scanning program from a program input device and the data detected forcedly from aforced key input device so as to simplify the connecting operation. CONSTITUTION:The program key input device 4 and the forced key input device 5 are connected in parallel with a data bus 19 of a sequencer main body 6, and a central processing unit 9, an ROM12, an RAM13, an input gate 10 and an output gate 11 are connected to the bus 19. Further, an address bus 17 is connected to the unit 9, a switching circuit 15 is connected to the bus 17 via an address bus 18, and the address bus 19 connected in common to the circuit 15 is connected to the devices 4, 5. Then, the program from the device 4 and the forced detecting data from the device 5 are switched sequentially, the address of the device 4 or 5 is designated individually, to simplify the connecting operation to the input gate 10 or the output gate 11. |
