实现NOKIA5110显示屏上的点、直线、空心矩形、填充矩形、空心圆、填充圆以及ASCII字符的绘制；可以拓展完成实验数据的曲线绘制。-The NOKIA5110 point display, straight, hollow rectangle, filled rectangle, hollow circle, filled circle, and ASCII character drawing　curve drawing can expand completion of the experimental data.