这里包含所有的自动控制原理的仿真方法，如欧拉法，梯形法，龙格库塔法，还有包括伯德图，奈氏图，跟轨迹，还有音乐播放器的设计，还有摄像头的打开，保存等-Here contains all the simulation method of automatic control principle, such as euler s method, trapezoidal method and runge kutta method, including Byrd, neville s figure, with trajectory, and the design of the music player, and camera open, save, and so on