Excerpt from The Service Concept Applied to Computer Networks
In recent years, increasing numbers of people have begun to use computers through interactive terminals in a conversational mode. Rather than submitting jobs in a batch mode and waiting hours (or days) for the results, users interact with the computer continuously on a transaction oriented basis. This trend gives every evidence ofcontinuing, and it appears that this will be the predominant form of computer access in the future. This type of computer access is characteristic of most current computer networks.
As discussed here, a computer network consists of one or more computers, one or more human users employing - an interactive terminal, and the communications facilities which interconnect them [bl74]. The user of a computer network is a customer for computer services. The communications portion of the network is only the delivery mechanism for the service which the user observes and evaluates. However, as a delivery mechanism, the communications facility may have a significant effect on the service received by the user at his terminal.
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