Bresenham画圆算法程序，在320240LCD上验证通过，效果很好。输入圆心坐标和半径即可画圆。-Bresenham Algorithm for Circle program, verify through the 320240LCD good effect. Enter center coordinates and radius can draw a circle.

HT1621B.RAR_点屏测试程序,主要用于测试和调试段码式LCD显示屏-HT1621B_.RAR general program highlights, mainly for testing and debugging of code-LCD display

使用C语言编写的LCD操作界面程序，带触屏功能所以请确认你的运行环境中是否有tslib库！-Using C language LCD user interface program, with touch-screen functionality so make sure your operating environment if there tslib library!