| 摘要 |
PURPOSE:To prevent misoperation by information the preset switch to be operated next, through sequential illumination of indicators corresponding to a plurality of preset switches, every time when a common storage switch MSW is in operation. CONSTITUTION:When a storage switch MSW7 is depressed, a storaring circuit 1 is enable to be written in for a given time, RS latches 9-11 are reset, the output of a monostable multivibrator 8 and illumination instruction SET of RS latches 29, 30 are fed to an ANd circuit 21, and the output of the circuit 21 illuminates a display device 18 via an OR circuit 26 to urge the operator to depress the preset switch PSW4. When SW4 is depressed, data write-in is made and the latch 29 is set with the output of an ANd circuit 24. Then, when SW7 is depressed, a display device 19 is illuminated to urge the operator to depress PSW5, and write-in is made by the depression of PSW6. Next, readout is made by depressing either one of SWs 4, 5, then the display device 20 is distinguished and the display device corresponding to PSW depressed is illuminated. |
