自己写的，没什么意思。初学者的东东。 本软件界面友好，功能齐全，数据后台安全，是同类产品的新秀.易学易用，操作方便，适合不同层次用户使用.适合各大、中专高等院校使用.-wrote it myself, little point. Beginners saucepan. The friendly software interface, the full range of functions, data security background is similar products in the NBA. Easy to use and easy to operate and suitable for different user levels. For major and secondary institutions of higher learning use.