DH算法的相关资料是一种不对称加密算法，希望对相关者有所帮助-DH relevant information on the algorithm is an asymmetric encryption algorithm, and I hope to help stakeholders

串口通信,vfp制作的拨打电话程序，代码精炼使用简单-Serial communication, vfp making calls procedures, refining the use of simple code