Based On USB Connection Network Cut Design And Realization

The computer application has gradually developed from applications on stand-alone to the LAN and expanded to the internet application. The phenomenon that one computer is connected with different networks has already widely existed. In order to suit the situation, multi- networks cut based on the USB connection is designed and realized in this paper.The network cut is the equipment used to realize the cut among different networks physically .Most traditional network cut uses the manual cut or the multi- nets card to realize the cut, and this way of control is mostly unable to realize the computer control. To solve these problems, the realization of the correspondence through the USB connection between the master chip (AT89C52SCM )and the computer is mainly designed in this article. The development of the cut system and drivers based on this network cut let the user realize the free cut among four networks.The design and realization of the network cut installment based on USB connections are studied in this article.After the analysis on the development and the trendy of the current network isolation technology, a discussion on How to use hardware based on USB connection to realize the cut is given with emphasis on the study on the performance and the technical parameter of the AT89C52SCM,24C01 IIC EEPROM and the Phillips company's connection components .A detailed research on the USB connection technique is given and the module programming realization of its firmware is completed. It carries on a more detailed introduction to the development of the system software and the debugging environment. The programming and debugging of the PDIUSBD12's USB firmware procedure and the development of USB equipment drivers and cut system based on Windows are completed. It realizes the design of the multi-networks cuts based on the USB connection.