Application of the dot-matrix liquid crystal display module to the control system of an engine

The principle and characteristic of the dot-matrix liquid crystal display module MGLS12864 are introduced. The interface circuit with single chip microcomputer 89C51, the flow-chart of kanji and character display treating subroutine and the program of displaying kanji are described. The basic programming can be applied to the other dot-matrix liquid crystal display module. The original control system of the engine is improved by this module. The result indicates that the hardware circuit is brief, and the man-machine interface is friendly.