点阵式液晶显示器以其特有的低 电压、低功耗、小体积、并可适应 夜间工作,以及显示信息的多样性等特点,在由单片机控制的便携式设备中得到了越来越广泛的应用。但是,由于单片微机的数据计算能力比较弱,随着点阵数量的增加,显示图形的处理工作成为控制程序中占用机时相当严重的一块。一般情况下,汉字信息的显示是以内建字库模型,通过查表来完成的。而纯图像信息则只能以手工描点的 Dot matrix LCD with its unique low voltage, low power consumption, small size, and can adapt to night work, as well as the diversity of display information and other characteristics in the portable device controlled by the microcontroller has been more and more widely used . However, since the computing power of the single-chip microcomputer is relatively weak, as the number of dots increases, the processing of the display graphics becomes a rather serious piece of control in the program. Under normal circumstances, the display of Chinese information is based on the built-in font model, through the look-up table to complete. Pure image information can only be hand-painted point