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Real-time applications 实时应用程序
Pub Date : 1975-09-01 DOI: 10.1145/1041244.1041245
John F. Barkley
If asked to name every programming language he knows, a person who considers himself knowledgeable in computers should be able to name at least ten. The list probably breaks down into three categories; those which he speaks, those which he does not speak but whose purpose is known, and those for which even the meaning of the name is unknown.
如果让一个认为自己精通计算机的人说出他所知道的每一种编程语言,他至少应该能说出十种。这个清单可以分为三类;那些他说的,那些他没有说但目的是已知的,还有那些连名字的意义都不知道的。
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引用次数: 20
Mini-(bank)-notes 迷你笔记(银行)
Pub Date : 1975-09-01 DOI: 10.1145/1164864.1164867
P. Wood
This column is dedicated to inexpensive computing. In it, I hope to explore ways in which a person, company or institution can get the most bang (and bits) per buck.
本专栏专门讨论廉价计算。在这本书中,我希望探索个人、公司或机构如何能最大限度地利用每一美元。
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引用次数: 0
Minicomputers and programmable calculators 小型计算机和可编程计算器
Pub Date : 1900-01-01 DOI: 10.1145/1164857.1164859
John F. Barkley
The most traditional form of the minicomputer system is the single-user system. It is primarily since the invention of the word "minicomputer" that minicomputers have been used in applications which require some form of multi-tasking, such as, message switching, industrial process monitoring, and laboratory instrument control. Indeed, some forms of these applications are implemented with single-user systems using FORTRAN or BASIC.
小型机系统最传统的形式是单用户系统。自从“微型计算机”一词被发明以来,微型计算机主要被用于需要某种形式的多任务处理的应用中,例如消息交换、工业过程监控和实验室仪器控制。实际上,这些应用程序的某些形式是用FORTRAN或BASIC在单用户系统中实现的。
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引用次数: 0
The most significant bits 最高有效位
Pub Date : 1900-01-01 DOI: 10.1145/1041231.1041232
J. E. Godderz
In the April issue of Computer Design the latest offering from Data General Corp. was reviewed. The offering consists of a new micro/minicomputer family which is code-compatible with NOVA minicomputers. The family has members aimed at OEM (original equipment manufacturers) and end users alike.
四月号的《计算机设计》杂志对Data General Corp.的最新产品进行了评论。该产品包括一个新的微型/微型计算机系列,它与NOVA微型计算机的代码兼容。该家族有针对OEM(原始设备制造商)和最终用户的成员。
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引用次数: 0
It's a small, small world 这是个很小很小的世界
Pub Date : 1900-01-01 DOI: 10.1145/1041239.1041242
P. Ryan
Much of the research and development for early computers was done in university research laboratories. Colleges and universities were quick to acquire computer facilities for research and for administration. During the early 1960's computers became widely available for instructional purposes. Thus most colleges and universities now have 10-15 years of experience in using computers, and many secondary school systems have 5-10 years of experience. However, in spite of all this effort, most members of our society do not have an adequate understanding of computers or any reasonable likelihood of getting one. Although administrative use has progressed more rapidly than instructional use, it is evident that both areas leave much to be desired. One can give good arguments that computers have not lived up to their promise as an aid to education.
早期计算机的大部分研究和开发都是在大学的研究实验室完成的。学院和大学很快获得了用于研究和管理的计算机设备。在20世纪60年代早期,计算机广泛用于教学目的。因此,大多数学院和大学现在有10-15年使用计算机的经验,许多中学系统有5-10年的经验。然而,尽管做出了所有这些努力,我们社会的大多数成员对计算机没有足够的了解,也没有任何合理的可能性得到一台计算机。虽然行政使用比教学使用进展得更快,但很明显,这两个领域都有待改进。人们可以给出很好的理由,认为计算机并没有实现它们作为教育辅助工具的承诺。
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引用次数: 5
How large should a computer be? 电脑应该有多大?
Pub Date : 1900-01-01 DOI: 10.1145/1164875.1164879
T. Lewis
The minicomputer invasion is bringing an end to the Renaissance Computer Age. The reasons for this are both technological and economical.Hardware costs have, because of LSI technology, diminished below the cost of complexity making general purpose k-way shared systems uneconomical for large values of k. On the otherhand, software development costs remain high due to complexity. Therefore, software complexity is forcing duplication of integrated hard/soft systems in place of hardware systems running a variety of programs.The hardware shift, as it is called, is also responsible for a shift in the type and number of computer applications. Shifts in applications lead eventually to greater hardware shifts. Viewed from an economic point-of-view the hardware shift is an "acceleration force" whose rate of change determines the size of future computers.
小型计算机的入侵正在终结计算机复兴时代。其原因既有技术上的,也有经济上的。由于大规模集成电路技术,硬件成本已经降低到复杂性成本以下,使得通用k-way共享系统对于大k值来说不经济。另一方面,由于复杂性,软件开发成本仍然很高。因此,软件复杂性正在迫使集成的硬/软系统的复制取代运行各种程序的硬件系统。所谓的硬件转移也导致了计算机应用程序类型和数量的变化。应用程序的变化最终会导致更大的硬件变化。从经济学的角度来看,硬件的转变是一种“加速力量”,其变化速度决定了未来计算机的大小。
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引用次数: 3
SP/K (PL/1 Subset) compilers now available for 360/370 and PDP-11 SP/K (PL/1子集)编译器现在可用于360/370和PDP-11
Pub Date : 1900-01-01 DOI: 10.1145/1164857.1164862
R. Holt, D. Wortman
The Computer Systems Research Group of the University of Toronto is now distributing their compilers for SP/k. These compilers support a sequence of subsets of PL/1 called SP/1, SP/2, SP/3, ..., SP/8 that have been designed for teaching programming. Generally., programs that run without errors under the SP/k compilers will run with the same results under other PL/1 compilers such as IBM's PL/1 F compiler, IBM's check-out compiler or Cornell University's PL/C compiler. (See the references for specifications of SP/k and discussion of using PL/1 for teaching.)
多伦多大学的计算机系统研究小组现在正在分发他们的SP/k编译器。这些编译器支持PL/1的子集序列,称为SP/1, SP/2, SP/3,…, SP/8,为编程教学而设计。一般。在其他PL/1编译器(如IBM的PL/1 F编译器、IBM的check-out编译器或康奈尔大学的PL/C编译器)下运行的程序在SP/k编译器下没有错误,也会产生相同的结果。(参考SP/k的规格和使用PL/1进行教学的讨论)
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引用次数: 0
Mini-notes 款mini - note
Pub Date : 1900-01-01 DOI: 10.1145/1041239.1041240
P. Wood
The appearance of microprocessor based computing systems has put the cost of hardware virtually within the reach of everybody. Software for such systems, however, hasn't even come near matching the ever expanding selection of gear. To help solve the software generation problem, many language processors have been developed. Since the products involved tend to have such restricted environments, these processors are usually run on machines that are much larger than the target processing system. It is quite common to have these processors available on the local time sharing network.
基于微处理器的计算系统的出现使得硬件的成本几乎在每个人都能负担得起的范围内。然而,这些系统的软件甚至还没有接近匹配不断扩大的齿轮选择。为了帮助解决软件生成问题,开发了许多语言处理器。由于所涉及的产品往往具有这种受限制的环境,因此这些处理器通常运行在比目标处理系统大得多的机器上。在本地分时网络上使用这些处理器是很常见的。
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引用次数: 0
What is a business application? 什么是业务应用程序?
Pub Date : 1900-01-01 DOI: 10.1145/1164857.1164861
T. Gary
From a general system theoretic standpoint, a business is certainly a system (organization). The inputs to a business are goods, services, and money. The business transforms these inputs into outputs which again consist of goods, services, and money. The objective (goal, purpose) of a business can and does vary from business to business. Also an objective can consist of reasonably separable sub-objectives which may or may not conflict. I am told by some that what I have defined is an enterprise. These people then view a business as an enterprise whose major objective is to generate (and maximize) profit. I do not want to make this distinction in this and subsequent columns.
从一般系统理论的观点来看,企业当然是一个系统(组织)。企业的投入包括商品、服务和资金。企业将这些投入转化为产出,产出同样由商品、服务和货币组成。企业的目标(目标,目的)可以而且确实因企业而异。此外,一个目标可以由可合理分离的子目标组成,这些子目标可能冲突,也可能不冲突。有人告诉我,我所定义的是一个企业。这些人认为企业的主要目标是产生(和最大化)利润。我不想在本专栏和以后的专栏中进行这种区分。
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引用次数: 0
Minicomputer technology for bio-medical information dissemination 生物医学信息传播的微机技术
Pub Date : 1900-01-01 DOI: 10.1145/1164857.1164858
James N. Falasco
Bio-medical information dissemination is continuing to increase in complexity. This trend places additional work on both the information user and supplier. In the medical community the chief information supplier usually is the library of health sciences.
生物医学信息传播的复杂性不断增加。这种趋势给信息使用者和提供者都带来了额外的工作。在医学界,主要的信息提供者通常是卫生科学图书馆。
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引用次数: 0
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ACM Sigmini Newsletter
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