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一、序言在我国许多业务系统的行政体系结构中,上下级单位之间的地理位置往往相距遥远,下属单位的规模也相差悬殊。一般的大、中型企业分布范围比较广,企业内部各职能科室的分布却又比较集中,而企业内的各分厂、车间可能分散设在几公里以至几十公里之外的地方。各职能科室本身以及相互之间的数据量和交换量往往比较大,下属的各车间普遍的是原始数据资料的收集与传送。在这样的情况下,寻求怎样经济、实用的建立大、中型企业的计算机网络系统,显然是个十分现实的课题。
I. Preface In the administrative architecture of many business systems in our country, the geographical locations between the upper and lower levels are often far away from each other, and the size of subordinate units also varies greatly. The distribution of large and medium-sized enterprises in general is relatively wide, and the distribution of various functional departments within the enterprises is relatively concentrated. However, the branches and workshops within the enterprises may be scattered in a few kilometers or even tens of kilometers apart. The functional departments themselves and the amount of data and exchange between each other tend to be relatively large, subordinate workshop is generally the collection and transmission of raw data. Under such circumstances, it is obviously a very realistic issue to seek how to establish a computer network system for large and medium-sized enterprises in an economical and practical manner.