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由于计算机科学技术的进步以及与现代数据通讯技术的紧密结合,近年来计算机局部网络(LAN,简称局网)的研究与发展极为迅速.国外不少计算机厂家巳推出了一批定型的局网产品,而其标准化工作也正在积极进行.局网具有多机系统高速处理的能力,又具有大型计算机网络共享资源及分布处理的功能,因此,它是一个具有广阔前景和强大潜在优势的计算机应用领域. 随着计算机硬件价格持续大幅度下降,尤其是微机的普及与发展,使一台微机价值在整个系统中所占的比重越来越小.所以,很自然地提出了将多台微机共享昂贵外设资源的要求,从而大大地推动了微机局网的研究,发展与应用.
Due to the progress of computer science and technology and the close integration with modern data communication technology, the research and development of computer local area network (LAN) has been extremely rapid in recent years.Many foreign computer manufacturers have already launched a batch of stereotyped LAN products , And its standardization is also being actively carried out.Government network has the ability of multi-machine system high-speed processing, but also has a large computer network to share resources and distribution processing functions, therefore, it is a promising and powerful potential of computer applications As the prices of computer hardware continue to drop dramatically, especially the popularization and development of microcomputers, the proportion of a microcomputer in the whole system is getting smaller and smaller.So, it is quite natural to put forward the idea of sharing more than one microcomputer Peripheral resources requirements, which greatly promoted the research, development and application of the micro-computer network.