用C8051F120写的12864液晶完整程序，有写汉字，打点、画线、坐标轴、画波形，级图像显示。液晶是带字库的ST7920驱动的,12864 written with C8051F120 LCD complete procedures to write Chinese characters, dot, drawing lines, axes, painting waveform-level image display. LCD is the belt-driven character of t