INFORMATION DISPLAY DEVICE

摘要

PURPOSE:To prevent malfunction due to noise, etc., and to improve the reliability of a device by transmitting clock signals of the number of addresses corresponding to plural display elements in a fault display unit from a control part and isolating the fault display unit. CONSTITUTION:Red signal line RD and green signal line GD are connected to switch circuits 24, 25 in order to utilize respective display data to a red light emitting element and a green light emitting element consisting of light emitting diode of two-color light emission as the condition of the isolation signal of the fault display unit 2. Then, display in which the fault display unit is isolated is made possible by transmitting clock signals of the number of addresses corresponding to plural display elements in the fault display unit and two display data whose states are changed from a control part 2 and allowing the J-K type flip-flop circuit 26c of a signal deciding circuit 26 to be latched with the clock signals with which display data are switched, by changing over the channel connection of the switch circuit 25 performing the isolation of the display unit 2 and by forming a buss line avoiding a register circuit 23.