Abstract: Computer hardware is the basic and keynotes in teaching of computer science including electronic and information engineering， computer technology and information technology. With the ideal virtual reality system it can observe hardware model as a whole， or in part or in detail by employing real time panorama picture， zooming in and out or rotating the model. In this report， 3DS MAX is utilized to establish electronic plank card which is then introduced into the virtual reality program； moreover， the DirectX interface is applied to the virtual reality program as well. In the improved virtual reality system，all types of hardware model could be re-built. Because of the diversities of plank card functions， and numerous types of plank card produced by many manufacturers， it is impossible for any business enterprise to obtain all types of plank cards. In addition， the improved virtual reality system can establish a situational scenario， which provides a platform for the customers including both technologists and students to understand and familiarize them with the hardware in terms of configurations， functions and applications at low cost.

Key words: virtual reality technology, VB, DirectX, multimedia