By analysing the structure of practical computer interface experiment and the mechanism between user program and system hardware on MS-DOS and Windows 9X,we get a way which builds a software interface between user program and system hardware.

• 在分析了真实的微机接口实验系统的组成和MS-DOS和Windows 9X操作系统下用户控制程序和系统硬件的交互机制的基础上,我们得到了构建虚拟实验模型的思路,即在用户控制程序和虚拟仪器之间引入软接口。