The user program is designed with Visual Basic 4.0,the program of controlling the hardware interface with Windows Dynamic Linking Library (DLL) which is programmed by Borland C ++ 4.5,and the date processing is with Access 2.0 database.

• 以BorlandC+ + 4 .；5语言编制Windows动态连接库 (DLL)为底层硬件接口的控制层 ; 数据处理层采用Access 2