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Electronic Computers, IRE Transactions on

Issue 1 • Date March 1958

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 1958 , Page(s): c1
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  • IRE Professional Group on Electronic Computers

    Publication Year: 1958 , Page(s): nil1
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  • [Breaker page]

    Publication Year: 1958 , Page(s): nil1
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  • Reviews and Bibliographies

    Publication Year: 1958 , Page(s): 1
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  • Direct-Coupled Transistor Logic Circuitry

    Publication Year: 1958 , Page(s): 2 - 6
    Cited by:  Papers (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (959 KB)  

    Direct-coupled transistor logic circuitry lends itself to systematic design methods and performs remarkably well. Logical design rules are given for use with transistors which meet specifications treated in a companion paper. The implications of the use of silicon transistors are discussed. View full abstract»

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  • Transistor characteristics for direct-coupled transistor logic circuits

    Publication Year: 1958 , Page(s): 6 - 16
    Cited by:  Papers (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1927 KB)  

    The basic requirement for stability of a direct-coupled transistor logic (dctl) circuit is that a voltage margin exist between the maximum collect-emitter voltage of an ``on'' unit in the system environment and the minimum base-emitter voltage required for a transistor to be sufficiently ``off.'' This margin has been expressed in terms of the fundamental device parameters: commonbase forward and i... View full abstract»

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  • An Analysis of Certain Errors in Electronic Differential Analyzers II-Capacitor Dielectric Absorption

    Publication Year: 1958 , Page(s): 17 - 22
    Cited by:  Papers (20)  |  Patents (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (871 KB)  

    The permittivity or dielectric constant of the materials used in capacitors is not actually a constant but is a complex function of frequency and temperature. Consequently, the feedback capacitors used in the integrators of a differential analyzer cannot be considered ideal, but their capacitance must be considered a variable. Methods of representing the complex capacitance are discussed and a mod... View full abstract»

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  • A Study of Refill Phenomena in Williams' Tube Memories

    Publication Year: 1958 , Page(s): 23 - 31
    Request Permissions | Click to expandAbstract | PDF file iconPDF (2996 KB)  

    A dot-circle scheme is proposed which will permit the distinction between binary ``O'' and ``1'' signals when the stored information has been destroyed approximately 90 per cent by refill. This unusual recovery of stored information is accomplished by making proper choices of operating parameters and using discharging effects instead of the charging effects as has been done in the past. Basic rela... View full abstract»

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  • Computing and Error Matrices in Linear Differential Analyzers

    Publication Year: 1958 , Page(s): 32 - 33
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (287 KB)  

    Matrix formulation permits the compact analysis of a very general computing scheme based on operational amplifiers. The computer solves an equation in which a computing matrix and an error matrix can be distinguished. Programming a differential equation consists of writing it in an appropriate matrix form. The computing setup is in immediate mutual correspondence with the computing matrix. The err... View full abstract»

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  • Scanners for Ferroelectric Memory Capacitors

    Publication Year: 1958 , Page(s): 34 - 40
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (3378 KB)  

    Many references are available on the properties and characteristics of ferroelectric materials and their memory application.1-3 The purpose of this paper is to present several scanning systems by which binary information can be stored and recalled from ferroelectric capacitor configurations. The circuitry to be described here was originally designed for testing of ferroelectric elements and employ... View full abstract»

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  • A Transistorized Four-Quadrant Time-Division Multiplier with an Accuracy of 0.1 Per Cent

    Publication Year: 1958 , Page(s): 41 - 47
    Cited by:  Papers (4)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (965 KB)  

    This article describes a four-quadrant time-division multiplier with an over-all accuracy of better than 0.1 per cent of full scale. The circuit is independent of the transistor characteristics, requires no complicated balancing adjustments, exhibits excellent stability and uses only simple, noncritical circuitry. The maximum output voltage is 10 v when both input voltages are 10 v. View full abstract»

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  • New Applications of an Electronic Function Generator

    Publication Year: 1958 , Page(s): 48 - 51
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    In previous papers a new technique for performing in a single electronic computing unit all nonlinear mathematical operations in a differential analyzer was described. The field of application of this technique is extended to include the generation of functions of several variables. View full abstract»

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  • Synthesis of N-Valued Switching Circuits

    Publication Year: 1958 , Page(s): 52 - 56
    Cited by:  Papers (16)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (867 KB)  

    The concept of a functionally complete set is defined and examples are given in the familiar field of 2-valued logic and 2-valued switching circuits. Several functionally complete sets, already Known to investigators in n-valued logic, are discussed, with particular emphasis on applications to the synthesis of n-valued switching circuits. It is noted that much of the switching in a base-n computer... View full abstract»

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  • Synthesis of Electronic Circuits for Symmetric Functions

    Publication Year: 1958 , Page(s): 57 - 60
    Cited by:  Papers (9)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (524 KB)  

    This paper develops a systematic method for the synthesis of electronic circuits which must realize symmetric Boolean functions. The ``fold-down'' method, originated by Shannon [1], solves the problem nicely for relay circuits. The electronic circuit, however, composed of ``and,'' ``or,'' and ``not'' elements, does not seem to incorporate the feature of symmetry as readily. It is shown that for sy... View full abstract»

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  • Correction

    Publication Year: 1958 , Page(s): 60
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  • Thermistors for the Gradual Application of Heater Voltage to Thermionic Tubes

    Publication Year: 1958 , Page(s): 61 - 64
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1588 KB)  

    Thermistors which are thermally-sensitive resistors having large negative temperature coefficients of resistance can be aptly used for the gradual application of heater voltage to thermionic tubes, thereby diminishing thermal transients and reducing mechanical failures. Full voltage is first applied to the thermistor and load in series and after temperature equilibrium is reached, the thermistors ... View full abstract»

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  • Review of Computer Progress in 1957

    Publication Year: 1958 , Page(s): 65 - 72
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  • Contributors

    Publication Year: 1958 , Page(s): 73 - 74
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  • PGEC News

    Publication Year: 1958 , Page(s): 75 - 76
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  • Reviews of Current Literature

    Publication Year: 1958 , Page(s): 77 - 89
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  • [Front cover]

    Publication Year: 1958 , 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