Proceedings of the April 30--May 2, 1968, spring joint computer conference最新文献_第4页

A new stable computing method for the serial hybrid computer integration of partial differential equations 偏微分方程串联混合计算机积分的一种新的稳定计算方法

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468098

R. Vichnevetsky

引用次数: 30

Fourth generation computer systems 第四代计算机系统

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468138

C. Walter, Arline Bohl Walter, Marilyn Bohl

引用次数: 8

Universal logic circuits and their modular realizations 通用逻辑电路及其模块化实现

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468120

S. Yau, Calvin K. Tang

{"title":"Universal logic circuits and their modular realizations","authors":"S. Yau, Calvin K. Tang","doi":"10.1145/1468075.1468120","DOIUrl":"https://doi.org/10.1145/1468075.1468120","url":null,"abstract":"In order to achieve the great economic advantage of utilizing integrated circuits in computer circuitry, it is desirable to design a circuit which can realize any logic function of a fixed number of variables by simply varying its input terminal connections. Such a circuit is called a universal logic circuit (ULC). When the number of variables becomes large, a ULC may be too complex to be built in a single package economically. Hence, it is preferred to use ULC's of a small number of variables as the modules to build a ULC of a large number of variables. Such modules are called universal logic modules (ULM's). In this paper, we shall first present a three-variable ULC, which has a fan-in for each logic gate not exceeding four, and consists of only 7 I/O pins. Then, we shall extend the ULC's to four or more variables. There are 12 I/O pins in a ULC of four variables, and several models with different fan-in limitations will be given. The logic gates in the ULC's may be all NAND or all NOR gates. Then, a simple technique for designing a ULC of any large number of variables using the ULC's of a small number of variables, say three variables, as the ULM's will be established. It will be seen that the ULC obtained by this technique will require a small number of ULM's. Moreover, the fault-detection tests for ULM's and a diagnostic procedure for locating all the faulty ULM's in the modular realization of a ULC realizing a given logic function will be presented. Finally, a method for improving the reliability of a ULC using an error-correcting code will be demonstrated.","PeriodicalId":180876,"journal":{"name":"Proceedings of the April 30--May 2, 1968, spring joint computer conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125635528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 31

Procedures and standards for inter-computer communications 计算机间通信的程序和标准

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468092

A. Bhushan, R. Stotz

引用次数: 7

A generalized linear model for optimization of architectural planning 建筑规划优化的广义线性模型

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468089

R. J. Aguilar, James E. Hand

引用次数: 6

A system for interactive graphical programming 交互式图形程序设计系统

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468083

W. Newman

引用次数: 173

Computer scheduling methods and their countermeasures 计算机调度方法及其对策

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468078

E. Coffman, L. Kleinrock

{"title":"Computer scheduling methods and their countermeasures","authors":"E. Coffman, L. Kleinrock","doi":"10.1145/1468075.1468078","DOIUrl":"https://doi.org/10.1145/1468075.1468078","url":null,"abstract":"The simultaneous demand for computer service by members from a population of users generally results in the formation of queues. These queues are controlled by some computer scheduling method which chooses the order in which various users receive attention. The goal of this priority scheduling algorithm is to provide the population of users with a high grade of service (rapid response, resource availability, etc.(, at the same time maintaining an acceptable throughput rate. The object of the present paper is to discuss most of the priority scheduling procedures that have been considered in the past few years, to discuss in a coherent way their effectiveness and weaknesses in terms of the performance measures mentioned above, to describe what the analysis of related queueing models has been able to provide in the way of design aids, and in this last respect, to point out certain unsolved problems. In addition we discuss the countermeasures which a customer might use in an attempt to defeat the scheduling algorithm by arranging his requests in such a way that he appears as a high priority user. To the extent that we can carry out such an undertaking, the single most important value of this consolidation of the results of analysis, experimentation, and experience will be in the potential reduction of the uncertainty connected with the design of a workable service discipline.","PeriodicalId":180876,"journal":{"name":"Proceedings of the April 30--May 2, 1968, spring joint computer conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125920611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 57

Error estimate of a fourth-order Runge-Kutta method with only one initial derivative evaluation 只有一个初始导数值的四阶龙格-库塔方法的误差估计

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468144

byA. S. Chai

引用次数: 5

Standards for user procedures and data formats in automated information systems and networks 自动信息系统和网络中的用户程序和数据格式标准

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468091

John L. Little, C. Mooers

{"title":"Standards for user procedures and data formats in automated information systems and networks","authors":"John L. Little, C. Mooers","doi":"10.1145/1468075.1468091","DOIUrl":"https://doi.org/10.1145/1468075.1468091","url":null,"abstract":"At the present time, a low-cost, suitably connected teletypewriter, and a telephone call, is the \"passport\" that can permit a person to make direct contact with any of more than two dozen computer-based information storage and processing capabilities within academic and research establishments scattered across the country. By the same method of access, one can in addition make contact with at least as many commercial services offering similar capabilities. By any reasonable estimate, there are now (Spring 1968) in operation more than two thousand such teletypewriter units which are being used by students, faculty, scientists, engineers, secretaries, and administrators. New accessible computer facilities, both academic and commercial, are being announced with regularity. In addition, large projects, both privately and governmentally sponsored, are under way with the purpose of creating vast topical information stores with associated processors. An important part of some of these plans is the linking of the stores into large networks, both for the exchange of information among the stores, as well as for presentation of the information to, and service to, the directly-connected ultimate user.","PeriodicalId":180876,"journal":{"name":"Proceedings of the April 30--May 2, 1968, spring joint computer conference","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1968-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132411738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Simulation applications in computer center management 仿真在计算机中心管理中的应用

Proceedings of the April 30--May 2, 1968, spring joint computer conference Pub Date : 1968-04-30 DOI: 10.1145/1468075.1468106

Thomas F. McHugh, E. Scott

引用次数: 0