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Electronic Computers, IRE Transactions on

Issue 1 • Date March 1959

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Displaying Results 1 - 22 of 22
  • [Front cover]

    Publication Year: 1959 , Page(s): c1
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  • IRE Professional Group on Electronic Computers

    Publication Year: 1959 , Page(s): nil1
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  • [Breaker page]

    Publication Year: 1959 , Page(s): nil1
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  • The Chairman's Column

    Publication Year: 1959 , Page(s): 1 - 2
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  • Absolute Minimal Expressions of Boolean Functions

    Publication Year: 1959 , Page(s): 3 - 8
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (868 KB)  

    In this paper we make a beginning in the hitherto unexplored problem of finding absolute minimal expressions of Boolean functions. We shall adhere to the notations and terminology introduced in our previous paper,1 which will be referred to as S. In the present paper, we shall find absolute minimals for Boolean functions whose point set complex consists of either one or two points. The case of one point is in Theorem 1, Section I. The case when the two points form a 1-cell is covered by Theorem 4, Section I which discusses an arbitrary dimensional cell. The case when the cell complex consists of two isolated points, the main theme of this paper, is dealt with in Section II. View full abstract»

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  • A Generalized Resistor-Transistor Logic Circuit and Some Applications

    Publication Year: 1959 , Page(s): 8 - 12
    Cited by:  Papers (3)
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    This paper discusses a generalized resistor-transistor logic circuit; i.e., the output produces a signal when any m out of the n inputs are ``on.'' Practical limitations such as using precision power supplies and components are discussed. However, for smaller values of n and m, circuits could be designed such that no special precision components and supplies would be required. Several practical circuits are worked out, including a two-transistor binary full adder, a three-transistor comparator and a one-transistor-per-bit-ring counter. These circuits, especially the first two, are uniquely simple and low in cost. They can be incorporated with other circuits to simplify a digital system. It is felt that with ordinary supplies (less than 5 per cent voltage variation) and 1 to 5 per cent resistors, these circuits can be designed to be very reliable as one would expect from conventional circuits. The slight increase in cost of power supplies and components, if any, is, in many cases, over compensated by the simplicity of these circuits. Experimental circuits employing germanium alloy junction transistors operate successfully at pulse rate up to 500 kc and an ambient temerature of 50°C. View full abstract»

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  • A Synthesis Technique for Minimal State Sequential Machines

    Publication Year: 1959 , Page(s): 13 - 24
    Cited by:  Papers (5)
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    A method is presented which always yields a minimal state sequential machine satisfying a prescribed finite set of input-output sequences. An application is made to the case where a given sequential machine is to be reduced, by the merging technique, to a machine having the smallest number of states possible. Numerous examples are given. View full abstract»

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  • A Ring Model for the Study of Multiplication for Complement Codes

    Publication Year: 1959 , Page(s): 25 - 30
    Cited by:  Papers (2)
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    A model is presented which, when modulo addition is used, can be used to derive multiplication correction schemata for operands expressed in either the radix complement or the diminished radix complement code. View full abstract»

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  • A High-Speed Analog to Digital Converter

    Publication Year: 1959 , Page(s): 31 - 35
    Cited by:  Papers (4)
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    An electronic voltage encoder has been developed which converts analog voltages to their corresponding parallel seven binary-digit representations at a 50-kc encoding rate. The encoder is capable of being time-shared by any number of 0-50-volt range inputs. Performance tests indicate that the present design may be capable of eight binary-digit conversions at encoding rates as high as 80 kc. Either more precise conversions or higher encoding rates may be obtained at the expense of the other by cascading more or less of the identical one-digit encoder stages which constitute the analog to digital converter. View full abstract»

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  • A Non-Real-Time Simulation of SAGE Tracking and BOMARC Guidance

    Publication Year: 1959 , Page(s): 36 - 41
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    The addition of facilities to the SAGE system for control of a new defensive weapon, such as the BOMARC missile, requires extensive modifications to the SAGE computer program. To obtain a better understanding of BOMARC control problems, a program has been written for the IBM Type 704 computer to simulate the proposed employment of BOMARC in the SAGE system. Such a simulation is flexible enough to optimize and evaluate a large range of parameters. On three separate passes through the 704 (with tape storage of intermediate results) the program simulates radar, target, and missile performance, as well as SAGE tracking and missile guidance. A fourth program presents the desired output data in the form of frequency distributions and detailed results pertaining to selected target or missile tracks. View full abstract»

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  • Time Multiplexing as Applied to Analog Computation

    Publication Year: 1959 , Page(s): 42 - 47
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    This multiplexer can perform a common dynamic operation upon several sets of inputs utilizing equipment for one dynamic operation. The result of the multiplexing will yield the corresponding several sets of outputs as though each set of inputs were operated upon separately by the dynamic operation. This device is useful when the dynamic operation to be shared involves relatively expensive equipment such as electromechanical gear and/or electronic computing or measuring circuits. It is particularly useful to reduce the number of components required when implementing problems in a simulation laboratory. View full abstract»

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  • A Figure of Merit for Single-Pass Data Recording Systems

    Publication Year: 1959 , Page(s): 48 - 54
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    The problem of the interference caused by eddy current transients to the reproduction of recorded data is studied for single-pass magnetic recording systems of both the write-read and read-write variety. Signal-to-interference ratios are introduced for both modes of operation, and their variation is studied in detail. It is found convenient to introduce a dimensionless parameter a as a figure of merit for single-pass systems. This factor is a function of the velocity of the magnetic medium, the number of pulses that can be recorded per unit length, and the permeability, conductivity, and dimensions of the laminations of the recording head; it is equal to a=¿2/6Nv¿¿d2. Brief consideration is given to the effect of certain practical system factors on the conclusions reached from the theoretical analysis. View full abstract»

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  • Simulation to Obtain a Systems Measure of an Air Duel Environment

    Publication Year: 1959 , Page(s): 55 - 59
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    A combined analog-digital simulation of an air battle between an attacking bomber aircraft and a ground controlled interceptor, including the intermediate human radar operator, has been designed for the purpose of evaluating the effects of airborne electronic countermeasures upon a ground-based radar operator. Both real and nonreal time simulation are used in the experimental setup. The simulation encompasses as much as possible of the system as affected by the operators' performance in the hope that a systems measure could be obtained. It is hypothesized that probable success of the bomber is the systems measure of the effectiveness of the countermeasures. View full abstract»

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  • 1958 PGEC Membership Survey Report

    Publication Year: 1959 , Page(s): 60 - 67
    Cited by:  Papers (1)
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    In order to sense the Professional Group on Electronic Computers' current position in the computing industry and in order for each member to assess his position within the Group, a second membership survey was completed in the Fall of 1958. The results of this survey are reported herein. Tabular data, bar graphs and salary curves are included to aid in assessment of the Group and an individual's position in the industry, particularly with respect to education, experience, field of endeavor, salary and geographical location. View full abstract»

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  • An Analog Method for Constructing a Curve

    Publication Year: 1959 , Page(s): 68
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    First Page of the Article
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  • Abstracts of Current Computer Literature

    Publication Year: 1959 , Page(s): 69 - 79
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  • Subject index

    Publication Year: 1959 , Page(s): 79 - 82
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  • Author index

    Publication Year: 1959 , Page(s): 82
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  • Contributors

    Publication Year: 1959 , Page(s): 83 - 84
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  • SENEWS

    Publication Year: 1959 , Page(s): 85 - 86
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  • PGEC News

    Publication Year: 1959 , Page(s): 87
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  • [Front cover]

    Publication Year: 1959 , Page(s): c2
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Aims & Scope

This Transactions ceased publication in 1962. The current retitled publication is 

IEEE Transactions on Computers.

Full Aims & Scope