| 摘要 |
PURPOSE:To perform the display of points being several times of provided displays under a limited number of the displays, by providing an oscillator and a counter for a display range set section, taking the output of the counter as the content of display range set, nd lighting the display designated with the display content through the output of the counter. CONSTITUTION:A signal check section 8 discriminates whether or not data number and parity of signals are correct, which are converted into parallel signals at a serial parallel data conversion section 31 from the signals taken with a signal input section 30 such as photocoupler from a transmission line. When correct, a write signal is outputted to a storage element 7, and a switching signal is outputted to an address switching section 32. The switching section 32 gives the address signal of the storage element 7 indicated from an lighting drive circuit 9 to the element 7 normally, and when an address switching signal comes from the signal check section 8, then the address is switched to that from the check section 8. The drive circuit 9 dirves the data stored in the element 7 so as to be lighted at a data display 33 and sets the part to be displayed in the stored data at a display range set section 10. |
