Design And Implementation Of Foot Stepping Keyboard Multimedia System Based On Science Exhibition

Science museum introduces advanced scientific technology to exhibit scientific principles and disciplinarians by using beautiful pictures. It has a very key role in improving people's scientific knowledge.In this dissertation, after giving a deep analysis of foot stepping keyboard multimedia system requirement and running environment, the principle of system scheme is worked out. Then we present an appropriate scheme to realize it according to advantages and disadvantages of different schemes. To be specific, user interface and multimedia application schemes are analyzed. Digital sample card and limit position switch are used to carry out user interface. DirectX technology is used to realize multimedia application and it is very efficient due to DirectX technology. After that, its structure is carried out considering expansibility and modularization. Further more, study architecture and principle of DirectX technology related this system and realize it. The test result shows the system has achieved expected effect.This system is based on industry control computer produced by Advantech. The operating system is windows 2000 professional and its development tool is visual c++ 6.0. The implementation is based on object-oriented development and this make the system have more expansibility and maintenance. Discuss the detail information of each module, including using digital sample card to get user input information, how to realize animation with DirectDraw, how to play an audio stream by using DirectSound technology and how to play a video using DirectShow.