In this paper,it is discussed that there are main features of EPP interface and to design a EPP interface forvirtual instruments based CPL D. Itis provided with EPP interface functions in L ab Windows/CVI.

• 本文详细讨论了 EPP接口特性 ,并使用 CPL D设计虚拟仪器的 EPP接口电路 ,给出了用 L ab Windows/CVI编写的 EPP接口功能函数