{"title":"An Analog-to-Digital Converter","authors":"A. D. Scarbrough","doi":"10.1109/IREPGELC.1953.5407732","DOIUrl":"https://doi.org/10.1109/IREPGELC.1953.5407732","url":null,"abstract":"A shaft position to binary number converter suitable for use as an input device for a digital computer is described. The basic component of the converter is a binary mechanical revolution counter having an output in the form of voltages or pulses on parallel lines representing, in the binary number system, the quantity stored in the counter. Ambiguities are eliminated by a novel method of internal switching. The effects of backlash are discussed and shown to be negligible.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1953-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126100284","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}
{"title":"A Photoelectric Decimal-Coded Shaft Digitizer","authors":"W. Libaw, L. J. Craig","doi":"10.1109/IREPGELC.1953.5407731","DOIUrl":"https://doi.org/10.1109/IREPGELC.1953.5407731","url":null,"abstract":"This aper describes a non-counting decimal-coded shaft digitizer. Phototubes are used to read the posi-of masks, permitting static as well as dynamic readout with minimum loading of the measured shaft. Reading is done with several units, each reading a digit of the decimal number representing the shaft position. A special decimal code enmploying 5 phototubes per decade is used to avoid intra-decade ambiguities. Inter-decade ambiguities are prevented by using two masks on all but the first decade. An experimental digitizer, using standard components, is described.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1953-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131539159","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}
{"title":"Design of triode flip-flops for long-term stability","authors":"J. Paivinen, I. Auerbach","doi":"10.1109/IREPGELC.1953.6499428","DOIUrl":"https://doi.org/10.1109/IREPGELC.1953.6499428","url":null,"abstract":"Reliable electronic circuit design must account for the parameter variations over the normal life of components to insure satisfactory operation. An analytical design method is derived for an Eccles-Jordan triode flip-flop in which the “worst” condition of voltage and component tolerances conditions are assumed that assures satisfactory operation for normal conditions. The method of analysis is to divide the flip-flop circuit into separate parts, write appropriate equations, and solve them simultaneously. The design method results in the best configurations of component values, regardless of what tube may be used, and actually specifies characteristics which-the tube should have, as well as the expected life of the tube in terms of maximum plate resistance.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1953-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133127112","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}
{"title":"Electrical delay lines for digital computer applications","authors":"J. Anderson","doi":"10.1109/IREPGELC.1953.6499427","DOIUrl":"https://doi.org/10.1109/IREPGELC.1953.6499427","url":null,"abstract":"A survey of existing lumped parameter and distributed parameter delay lines has shown that their maximum. storage capacity is about 23 pulses and 15 pulses respectively regardless of total delay time. An analysis of pulse transmission through distributed delay lines indicates that dissipation in the inductive elements is the chief factor limiting storage capacity. A method is proposed for decreasing this dissipation through the use of high-Q nickel zinc ferrites around straight conductors for inductive elements.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1953-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128946285","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}
{"title":"Hidden regenerative loops in electronic analog computers","authors":"L. G. Walters","doi":"10.1109/IREPGELC.1953.6499426","DOIUrl":"https://doi.org/10.1109/IREPGELC.1953.6499426","url":null,"abstract":"This paper presents a detailed analysis of regenerative loops in computing machines. Emphasis is placed upon the manifestation of this problem in an electronic analog computer wherein the detrimental effects of regenerative loops are most often reported. Regenerative loops are shown to arise when, in the physical system being considered, coupling occurs through an element capable of storing energy. The regenerative-loop gain is the deciding factor; an analysis of the effects of varying this loop gain in an attempt to stabilize the computing process is also presented. Results are verified for a simple problem by an electronic analog computer.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1953-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122765466","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}
{"title":"Symbolic programming","authors":"N. Rochester","doi":"10.1109/IREPGELC.1953.6499409","DOIUrl":"https://doi.org/10.1109/IREPGELC.1953.6499409","url":null,"abstract":"Automatic calculators can be programmed to interpret programs which have been written with symbolic instead of actual addresses. This method allows the calculator to assume much of the clerical burden which must otherwise be borne by the programmer.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"13 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1953-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124527457","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}
{"title":"Operating experience with UNIVAC SYSTEMS","authors":"J. R. Weiner","doi":"10.1109/IREPGELC.1952.6499398","DOIUrl":"https://doi.org/10.1109/IREPGELC.1952.6499398","url":null,"abstract":"In December 1951, at the joint AIEE/IRE Computer Conference held in Philadelphia, several papers were given which discussed the performance of a single UNIVAC SYSTEM∗ during its first eight months of operation. Although only eight months have passed since that performance summary was given, a much greater effective length of time has passed because three more UNIVAC SYSTEMS have been put into operation since then, and their records together with those of the first system constitute many more months of operation. This paper, therefore, forms an extension of the earlier paper in which we have the good fortune of being able to confirm a number of the predictions and estimates mentioned in the earlier work.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1952-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132962459","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}
{"title":"A stabilized electronic multiplier","authors":"C. Morrill, R. V. Baum","doi":"10.1109/IREPGELC.1952.6499400","DOIUrl":"https://doi.org/10.1109/IREPGELC.1952.6499400","url":null,"abstract":"Many people engaged in the development of precision analog computing equipment have concluded that the two most useful computing circuit elements are a stabilized d-c amplifier and a high-speed precision switch. The first requirement is met by a circuit disclosed by Goldberg.1 A method of stabilizing a large number of d-c amplifiers with a single pulse amplifier was first reported by Ingerson.2","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1952-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126978667","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}
{"title":"A digital computer for airborne control systems","authors":"E. Nelson","doi":"10.1109/IREPGELC.1952.6499394","DOIUrl":"https://doi.org/10.1109/IREPGELC.1952.6499394","url":null,"abstract":"A digital computer has been developed for use in airborne control systems. This application presents many problems. The computer must be small, light weight, and very reliable. It receives its input signals from instruments in the rest of the system. These signals are of the “analogue” continuous type and must be converted into the discrete electric signals used in the computer. The problems of analogue-digital conversion are problems in the measurement of the physical quantities that define the state of the system and in the transformation of the results of these measurements into digital signals. The digital numbers representing the input quantities are processed by the computer which performs in real time the computations corresponding to the mathematical representation of the control problem. The results of these calculations are numbers representing the signals used to control the system. These output numbers are converted into the analogue type signals used in the control operations.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1952-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131439216","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}
{"title":"Multidimensional magnetic memory selection systems","authors":"M. Haynes","doi":"10.1109/IREPGELC.1952.6499397","DOIUrl":"https://doi.org/10.1109/IREPGELC.1952.6499397","url":null,"abstract":"Many investigators have for several years been studying the use of rectangular loop magnetic cores as memory elements. It seems profitable at this time to examine, from a dimensional point of view, the various selection systems which have been developed, and to find the relations between their operating principles.","PeriodicalId":304144,"journal":{"name":"Trans. I R E Prof. Group Electron. Comput.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1952-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124332479","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}
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