按键控制定时器选播多段音乐,由51单片机控制，包括源程序和仿真图。-Anycast music key control timer from 51 single-chip control, including source code and simulation plan.

PSCAD此为一风机的仿真模型，跟官网里的例子相似但是有些许差别， 整个模型包括风机，电机，控制，风力机、异步机、变流器和外部等值线路（线路、变压器和等值系统）-This is a fan simulation model, with the official website of the example similar to the slight difference, The entire model includes fans, motors, controls, wind tur