电脑鼠上中段服务部分程序，用来控制PWM 的。-A computer mouse on the middle part of program services, used to control the PWM' s.

结合PCA的尺度不变特征变换(SIFT)算法，包含优化类的几个简单示例程序，pwm整流器的建模仿真。- Combined with PCA scale invariant feature transform (SIFT) algorithm, Optimization class contains several simple sample programs, Modeling and simulation pwm rectifie.