1979-02-01

Electronic Instrumentation-Luminous Displays and Their Drive Circuits 790057

This paper reviews active work being carried out in Europe. A newly developed range of I.C.'s is described. Test panels using Vacuum Fluorescence, DC Electroluminescence, and Light Emitting Diodes are being built into display modules and fitted to vehicles for evaluation.The present state of development with DC Electroluminescence is described, including combined instrument panels which can be made now. The relative merits of other available systems particularly relevant to economics are compared.A range of digital clock variants, including timers, and the integration into tachometer and instrument panels leading to general digital instruments are also described.Also covered are the special problems of trip and total odometers and the available solutions.Finally the paper covers the addition of microprocessors to the control electronics adding the possibility of other functions such as diagnostic and message panels.

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