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# IRE Transactions on Electronic Computers

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Displaying Results 1 - 25 of 42
• ### [Front cover]

Publication Year: 1961, Page(s): c1
| PDF (776 KB)
• ### IRE Professional Group on Electronic Computers

Publication Year: 1961, Page(s): nil1
| PDF (110 KB)
• ### [Breaker page]

Publication Year: 1961, Page(s): nil1
| PDF (110 KB)
• ### Editorial

Publication Year: 1961, Page(s): 345
| PDF (117 KB)
• ### An Algorithm for Path Connections and Its Applications

Publication Year: 1961, Page(s):346 - 365
Cited by:  Papers (642)  |  Patents (18)
| | PDF (2799 KB)

The algorithm described in this paper is the outcome of an endeavor to answer the following question: Is it possible to find procedures which would enable a computer to solve efficiently path-connection problems inherent in logical drawing, wiring diagramming, and optimal route finding? The results are highly encouraging. Within our framework, we are able to solve the following types of problems: ... View full abstract»

Publication Year: 1961, Page(s):366 - 370
Cited by:  Papers (9)
| | PDF (803 KB)

In this paper, networks of finite-state machines, rather than individual machines, are discussed. The investigation centers around cascade networks, where the output of one machine serves as an input to another. It is shown how, by means of connection matrices, the characteristics of such a network can be obtained from those of the component machines, and how a specified machine can be decomposed ... View full abstract»

• ### The Realization of Symmetric Switching Functions with Linear-Input Logical Elements

Publication Year: 1961, Page(s):371 - 378
Cited by:  Papers (50)
| | PDF (1253 KB)

The problem of synthesizing switching networks out of linear-input (threshold) elements is studied for the class of symmetric switching functions. Tight bounds are derived for the number of elements required in a minimal realization, and a method of synthesis is presented which yields economical networks. Minimal networks result for all symmetric functions of no more than about twelve variables, a... View full abstract»

• ### Orthogonal Functions for the Logical Design of Switching Circuits

Publication Year: 1961, Page(s):379 - 383
Cited by:  Papers (14)
| | PDF (704 KB)

A new approach to the mathematical representation of switching functions is presented. It was developed in connection with a theoretical study of magnetic-core logic, but the results are considered to be more basic and general than the core-logic problem. The ampere-turns (MMF) expression for core switching is shown to be part of a special type of Fourier series expansion of a switching function, ... View full abstract»

• ### Autocorrelations for Boolean Functions of Noiselike Periodic Sequences

Publication Year: 1961, Page(s):383 - 388
Cited by:  Papers (1)
| | PDF (914 KB)

One method of generating a waveform whose correlation function resembles that of noise is by means of combinations of periodic binary sequences. In this paper the properties of the correlation function for arbitrary functions of n periodic binary sequences are investigated. An especially simple formulation is obtained when each binary variable in all the sequences has equal probability of being 0 ... View full abstract»

• ### Signed-Digit Numbe Representations for Fast Parallel Arithmetic

Publication Year: 1961, Page(s):389 - 400
Cited by:  Papers (791)  |  Patents (20)
| | PDF (2274 KB)

This paper describes a class of number representations which are called signed-digit representations. Signed-digit representations limit carry-propagation to one position to the left during the operations of addition and subtraction in digital computers. Carry-propagation chains are eliminated by the use of redundant representations for the operands. Redundancy in the number representation allows ... View full abstract»

• ### Computing Machine Aids to a Development Project

Publication Year: 1961, Page(s):400 - 406
Cited by:  Papers (2)
| | PDF (1038 KB)

A system o integrated computer programs which provide useful machine assistance to the development of a digital system will be described. The individual programs are capable of such separate engineering tasks as verifying design data, optimally locating electronic logic packages on a chassis, routing interconnecting wires and preparing documents like wiring diagrams and wire running lists. The eng... View full abstract»

• ### Improvement of Electronic-Computer Reliability through the Use of Redundancy

Publication Year: 1961, Page(s):407 - 416
Cited by:  Papers (21)  |  Patents (1)
| | PDF (1689 KB)

Physical elements used for switching logic have finite probability of failure. The application of redundancy to logic circuits is presented for improving computer reliability. This paper shows various redundant configurations considered and the conclusionon drawn. From all of the considerations, the majority gate provides a practical method for increasing the reliability. It shows that for operati... View full abstract»

• ### Some Thoughts on Digital Components and Circuit Techniques

Publication Year: 1961, Page(s):416 - 425
Cited by:  Papers (12)
| | PDF (1974 KB)

Signal standardization and control directivity are emphasized as the basic physical requirements in considering components and circuit techniques for the handling of digital information. The significance and the ways and means of meeting these requirements are most revealing when illustrated by the operations of the parametric phase-locked oscillator and the tunnel diode. A categorical listing of ... View full abstract»

• ### UNIYAC-LARC High-Speed Circuitry: Case History in Circuit Optimization

Publication Year: 1961, Page(s):426 - 438
Cited by:  Papers (3)
| | PDF (3843 KB)

In recent years, the design of computer circuits has become a thorough and complex job. Factors such as logical design, behavior of components, manufacturing techniques, and life tests are playing an even more important role in the design of an efficient circuit. This paper will discuss how circuit optimization techniques and use of the UNIVACÂ® I computing system aided in reducing cost and avoidi... View full abstract»

• ### Coincident-Current Superconductive Memory

Publication Year: 1961, Page(s):438 - 446
Cited by:  Papers (14)
| | PDF (3721 KB)

In a continuous superconductive film memory, elements are obtained through discrete regions of circulation of persistent currents near the intersection of x-y conductors deposited on the film. Analysis and confirming experiments show that these regions are stable. The elimination of edges of discrete film dots removes the main cause of variation of critical currents. Reproducibilities better than ... View full abstract»

• ### Semipermanent Storage by Capacitive Coupling

Publication Year: 1961, Page(s):446 - 451
Cited by:  Papers (1)
| | PDF (1511 KB)

The need arises for reliable, economical high-speed, semipermanent stores for electronic-telephone switching systems, as well as for modern digital computers. A semipermanent or fixed store is one in which the stored information may not be changed by the machine that is able to consult it. These stores provide data security for such information as operational programs and test routines. A random-a... View full abstract»

• ### A Card-Changeable Permanent-Magnet-Twistor Memory of Large Capacityt

Publication Year: 1961, Page(s):451 - 461
Cited by:  Papers (3)
| | PDF (3754 KB)

The card-changeable permanent-magnet-twistor memory is a large capacity (ca 105 bits) storage media for information that is infrequently changed. The information is stored in the form of small bar magnets bonded to a removable plastic card. The magnets, when magnetized, inhibit the switching of a section of twistor wire at a twistor-wire-solenoid crosspoint. For maximum information dens... View full abstract»

• ### Correction

Publication Year: 1961, Page(s): 461
| PDF (519 KB)
• ### The Simulation of Cognitive Processes: An Annotated Bibliography

Publication Year: 1961, Page(s):462 - 483
Cited by:  Papers (1)
| | PDF (5972 KB)

First Page of the Article
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• ### A Note on the System Requirements of a Digital Computer for the Manipulation of List Structures

Publication Year: 1961, Page(s):484 - 489
Cited by:  Papers (2)
| | PDF (1276 KB)

The technique of programming within the framework of the so-called Newell-Shaw-Simon (NSS) associative list memory is currently the subject of much interest among workers in the area of advanced programming research. Unfortunately, committing a given program to list memory generally entails accepting a significant loss of speed and efficiency in information processing, so that the advantages accru... View full abstract»

• ### The Simulation of Three Machines Which Read Rows of Handwritten Arabic Numbers

Publication Year: 1961, Page(s):489 - 501
Cited by:  Papers (11)
| | PDF (6653 KB)

Three machines have been simulated using an optical scanner and the IBM 704 computer. Each of these simulated machines has read documents containing rows of handwritten Arabic numbers. Sample numbers were produced by at least 20 people for each simulation study. The three machines simulated differ in the control required of the writer during document preparation and in the complexity of the machin... View full abstract»

• ### An Analog Method for Character Recognition

Publication Year: 1961, Page(s):502 - 512
Cited by:  Papers (24)
| | PDF (2455 KB)

A method for character recognition which is capable of an analog implementation has been studied by simulation on asymbols digital computer. In essence, this method involves maximizing the cross-correlation value between the unknown character and a set of average characters, there being one average character for each allowed character class. An average character is represented by a two-dimensional... View full abstract»

• ### The Hall-Effect Analog Multiplier

Publication Year: 1961, Page(s):512 - 515
Cited by:  Papers (1)
| | PDF (2199 KB)

The application of the Hall effect to a general-purpose four-quadrant multiplier is discussed. Circuit diagrams for the transistor amplifiers are given. An evaluation of the experimental results is given for a breadboard model of the multiplier. Static accuracies on the order of 1 per cent to 3 per cent are obtained for the Hall channel and the magnetic channel, respectively. Bandwidths of 25 kc a... View full abstract»

• ### Copper-Mandrel Potentiometer Dynamic Error and Compensation

Publication Year: 1961, Page(s):516 - 523
| | PDF (1137 KB)

A simple potentiometer equivalent circuit is presented that is valid for single or multiturn, copper-mandrel, wire-wound precision potentiometers. Developed to obtain a practical approximation of potentiometer ac characteristics, it is particularly useful in error analyses where small phase errors are critical. Capacitive compensation techniques are also given that can achieve considerable reducti... View full abstract»

• ### Design of the ESIACÂ® Algebraic Computer

Publication Year: 1961, Page(s):524 - 529
Cited by:  Papers (1)
| | PDF (2960 KB)

The concept of a pair of potential-plane factor analogs,'' in which voltage measurements at the zeros and poles of a function are used for the calculation, is employed in the design of a general-purpose computer for algebraic functions of a complex variable. The logarithmic complex plane is used in order to represent a wide range of zeros and poles with uniform accuracy. Plotting facilities prov... View full abstract»

## Aims & Scope

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

Full Aims & Scope