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Dot-matrix liquid crystal display experiments to understand the working principle of the experiment have dot-matrix liquid crystal display design process. The experimental plate is used in the 12864A LCD built-12864A from the two controllers out with KS0108 driver circuit and a line driver circuit KS0107 major hardware components also occurred in the circuit can be attached to negative pressure display 128* 64 from a point of the composition of the liquid crystal film