采用8253，8255，8259实现交通灯的控制，十字路口，有详细硬件连接图，软件代码以及详细的工作原理-8253,8255,8259 adopted to achieve the control of traffic lights, crossroads, and a detailed plan to connect the hardware, software code, as well as detailed working principle

地震工程数据处理代码 tcl/tk编写 运行环境Opensees和matlab analysis2_dynamic——求解代码 analyze3_Dynamic.EQ.Uniform——求解代码 LibAnalysisDynamicParameters——求解参数设置代码 ReadSMDfile2——地震波转换加载代码 PSDA——数据处理代码（matlab）-code for performance based earthquake engineering analysis