一个USDOS 环境下 地磅 软件 （整套），内含 表单 计算，计价等，但要 串口软件支持 -1 USDOS environment loadometer software (package), containing form terms, pricing and so on, but software support for serial port

用JSP编程实现购物车的增删改查 计价等功能 -to use JSP to achieve the shopping car with functions of adding, deleting ,count price ,finding and so on