By Topic

Electronic Computers, IRE Transactions on

Issue 2 • Date April 1962

Filter Results

Displaying Results 1 - 25 of 38
  • [Front cover]

    Publication Year: 1962 , Page(s): c1
    Save to Project icon | Request Permissions | PDF file iconPDF (683 KB)  
    Freely Available from IEEE
  • IRE Professional Group on Electronic Computers

    Publication Year: 1962 , Page(s): nil1
    Save to Project icon | Request Permissions | PDF file iconPDF (111 KB)  
    Freely Available from IEEE
  • [Breaker page]

    Publication Year: 1962 , Page(s): nil1
    Save to Project icon | Request Permissions | PDF file iconPDF (111 KB)  
    Freely Available from IEEE
  • Iterative Switching Networks Composed of Combinational Cells

    Publication Year: 1962 , Page(s): 123 - 131
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1584 KB)  

    The networks considered in this paper consist of n identical combinational logic cells connected in cascade through bi-directional discrete information channels. All switching is done synchronously with unit time delay through each cell. Three classes of networks are formed according to whether or not information flow in one direction along the cascade is dependent upon that in the other. Steady-s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Examples of Abstract Machines

    Publication Year: 1962 , Page(s): 132 - 135
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (854 KB)  

    Numerous physical situations related to data processing are shown to be modeled by a mathematical entity called a quasi-machine. The situations described include 1) single inputs producing multiple outputs, 2) machines yielding no outputs upon insertion of certain inputs, 3) the retention of the last n outputs only, 4) ``erase left'' on tape, 5) different input routines doing the same work, and 6)... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Cascaded Switching Networks of Two-Input Flexible Cells

    Publication Year: 1962 , Page(s): 136 - 143
    Cited by:  Papers (39)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1471 KB)  

    This paper studies a class of switching networks which are constructed by cascading two-input, single-output completely flexible binary logical cells. It is assumed that each cell can be adjusted at will in order that any one of the sixteen possible switching functions of its two binary inputs may be obtained at its single output lead. An n-input cascaded network is composed of n-l, two-input, sin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Vertex-Frame Method for Obtaining Minimal Proposition-Letter Formulas

    Publication Year: 1962 , Page(s): 144 - 154
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2046 KB)  

    The vertex frame is similar to an n-dimensional cube or Tychonoff frame that has been cut and unfolded into the shape of a Karnaugh map. The methods of use are similar to those for Karnaugh maps. Minimal disjunctive and conjunctive normal formulas are found for problems with or without don't-care cases. The selection graph, a linear graph, is used to enhance the prime antecedent (= prime implicant... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Logarithmic and Exponential Function Evaluation in a Variable Structure Digital Computer

    Publication Year: 1962 , Page(s): 155 - 164
    Cited by:  Papers (7)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1589 KB)  

    Sequential table look-up algorithms are proposed for the evaluation of ln x and exp x. Tables of pre-computed constants are utilized in transforming the argument into a range where the function may be approximated by a simpler polynomial. In the case of ln x, x is transformed so that it falls into a close neighborhood of 1; in the case of exp x, x is transformed to a close neighborhood of 0. These... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Computer for Solving Linear Simultaneous Equations Using the Residue Number System

    Publication Year: 1962 , Page(s): 164 - 173
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1849 KB)  

    The design of a special-purpose digital computer for solving simultaneous equations which operates with numbers coded in the residue number system is described. Since addition, subtraction or multiplication can be done in one-bit time using this coding, Gauss-Seidel iteration can be done in a very fast and efficient manner. The computer has been arbitrarily designed to solve dense systems of equat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Computational Chains and the Simplification of Computer Programs

    Publication Year: 1962 , Page(s): 173 - 180
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1343 KB)  

    In the synthesis of switching circuits, a formal representation of the function to be realized by the circuit is first established and simplified as much as possible. Only then is construction of the circuit undertaken. It is argued that an analogous strategy should be followed in the synthesis of digital computer programs: the function to be realized by a program should first be established in a ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Information Processing by Data Interrogation

    Publication Year: 1962 , Page(s): 181 - 187
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1479 KB)  

    A data-processing technique is described in which a function is evaluated by rapid interrogation of the given data for the presence of combinations of data variables giving rise to values of the function which are of interest. Testing unlabeled measurements from several observers to find data sets which satisfy a test function is discussed as an example. For many problems the required time is much... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The StenowriterߞA System for the Lexical Processing of Stenotypy

    Publication Year: 1962 , Page(s): 187 - 199
    Cited by:  Papers (1)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3149 KB)  

    The system design and evaluation of an experimental system are presented. The ``Stenowriter'' utilizes a special-purpose translation computer, equipped with a large random-access memory, to provide real-time processing of spoken material into typewritten English. The input is provided by an operator using a special keyboard with which information may be stenographically encoded as rapidly as it is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Time Average Thermal Properties of a Computer Utilizing Thin-Film Superconducting Elements

    Publication Year: 1962 , Page(s): 200 - 212
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2402 KB)  

    It is necessary to understand the static thermal properties of cryotron gates before one can predict the limitations associated with dissipative heating of a complex cryotronic computer. An experimental program has been conducted to determine the thermal properties of isolated and of thermally coupled gates. All experiments reported in this paper were performed on tin gates evaporated onto glass s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Tunnel-Diode Full Binary Adder

    Publication Year: 1962 , Page(s): 213 - 217
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1421 KB)  

    A full binary adder utilizing a single tunnel diode and three resistors as its basic components is described, the circuit design criteria is outlined and values for a typical case are computed. The operating rate of the adder was determined analytically to be approximately 3 nsec. Experimental results obtained with a practical circuit that employed a 1N2939 tunnel diode were in good agreement with... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Circuits Employing Toroidal Magnetic Cores as Analogs of Multipath Cores

    Publication Year: 1962 , Page(s): 218 - 223
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1613 KB)  

    Circuits which are analogous to multipath magnetic cores are described. Toroidal cores are employed to simulate the branches of the multipath core. The conservation of flux at a node is simulated by means of shorted windings connecting groups of cores. These insure that the sum of the flux changes in the cores on a given winding will vanish. Ampere's law is simulated by proper choice of both numbe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • One-Level Storage System

    Publication Year: 1962 , Page(s): 223 - 235
    Cited by:  Papers (42)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3212 KB)  

    After a brief survey of the basic Atlas machine, the paper describes an automatic system which in principle can be applied to any combination of two storage systems so that the combination can be regarded by the machine user as a single level. The actual system described relates to a fast core store-drum combination. The effect of the system on instruction times is illustrated, and the tape transf... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of Memory Sense Amplifiers

    Publication Year: 1962 , Page(s): 236 - 253
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3297 KB)  

    A fundamental problem in the design of fast (4 to 6 ¿sec) word oriented memories using S-1 core material is the realization of a sensing amplifier which has the multitude of required properties. The sense amplifier is usually required to provide stable gain for bipolarity signals, to introduce a negligible delay into the signal path, to avoid dc level shift, to recover within a short time followi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Harmonic Analysis of Saturation Recording in a Magnetic Medium

    Publication Year: 1962 , Page(s): 253 - 263
    Cited by:  Papers (14)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2113 KB)  

    A single write-read head coupled with saturation recording techniques is commonly used to store digital information. Because of the experimental difficulty in determining the contribution of individual parameters to the system, a theoretical equation describing the output of a system in terms of the physical, magnetic, and electrical parameters of the system has been developed and programmed for t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Magnetic Configuration of Stylus Recording

    Publication Year: 1962 , Page(s): 263 - 273
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (4568 KB)  

    A cylindrical magnetic stylus driven by a coil can be used to transfer bits of information onto a magnetic surface. These bits are recorded as round spots and combinations of these spots can form a desired pattern, e.g., numbers or letters. A mathematical model corresponding to the magnetic properties of a recorded spot is proposed and analyzed. The major considerations in the analysis are the fie... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Stochastic Model for the Browning-Bledsoe Pattern Recognition Scheme

    Publication Year: 1962 , Page(s): 274 - 282
    Cited by:  Papers (4)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1571 KB)  

    A stochastic model is presented which gives the probabilities of successful recognition of the Browning-Bledsoe recognition scheme as a function of scheme parameters and pattern variability parameters. Also, procedures are given for estimating the variability parameters from data so that the model can be used to predict readability. The adequacy of the model is checked by comparing estimated reada... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the Number of Types of Self-Dual Logical Functions

    Publication Year: 1962 , Page(s): 282 - 284
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (722 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Electronic Generator of Random Numbers

    Publication Year: 1962 , Page(s): 284
    Cited by:  Papers (2)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (268 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Inconsistent Canonical Forms of Switching Functions

    Publication Year: 1962 , Page(s): 284 - 285
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (504 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Counting with Feedback Shift Registers by Means of a Jump Technique

    Publication Year: 1962 , Page(s): 285 - 286
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (396 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Hysteresis-Free Tunnel-Diode Amplitude Comparator

    Publication Year: 1962 , Page(s): 286 - 287
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (341 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

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

IEEE Transactions on Computers.

Full Aims & Scope