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引言 数据远程处理系统,除采用以大型计算机为中心,配有大量本地和远程外围设备的集中式系统外,将多台计算机连接成网组成分布式处理系统的应用越来越广泛。这种方式将数据处理能力和数据存储手段移近工作现场,分布在很大的区域里(即所谓“智能分散”)。在这种分布式远程处理系统中,数据通讯起着枢纽作用,因为只有通过数据通讯系统才能对分布的智能进行必要的调度。
Introduction Data remote processing systems, in addition to a centralized system with a large number of local and remote peripherals centered around a large number of computers, have become more and more widely used to connect multiple computers into a network to form a distributed processing system. This approach brings data processing capabilities and data storage approaches closer to the job site, spread over a large area (so-called “smart decentralization”). In such distributed teleprocessing systems, data communications play a pivotal role, because the distributed intelligence can only be dispatched as necessary through data communications systems.