计算机网络是计算机技术与数据通讯技术飞速发展而又密切结合的产物。即将到来的信息社会中,在信息的收集、传输、存贮和处理方面,计算机网络将扮演越来越重要的角色。局部计算机网络,或简称局部网(LAN-Local Area Netcoork),将一个局部范围内的小型、微型计算机互连在一起以实现分布处理和资源共享,投资少而收效快,正成为计算机网络最为活跃的一个分支。 Computer network is the rapid development of computer technology and data communication technology and closely combined product. In the coming information society, computer networks will play an increasingly important role in the collection, transmission, storage and processing of information. Local computer networks, or simply LAN-Local Area Netcoorks, interconnect small, microcomputers within a local area for distributed processing and resource sharing with minimal investment and high efficiency, making them the most active computer network A branch of