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Proceedings of the IEEE

Issue 11 • Date Nov. 1973

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Displaying Results 1 - 25 of 36
  • [Front cover and table of contents]

    Publication Year: 1973, Page(s): c1
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1973, Page(s):1524 - 1525
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  • The past, present, and future of minicomputers: A scenario

    Publication Year: 1973, Page(s):1526 - 1534
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    This article traces the evolution of minicomputers from 1955 to 1973 and forecasts their near-future characteristics and uses. Advances significant in the growth of minicomputers are tutorially described as they occurred in nineteen different machines. Only computers having attained the status "commercially available" are included. The entire discussion is based on two descriptors: the first, depi... View full abstract»

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  • Minicomputer hardware architecture

    Publication Year: 1973, Page(s):1535 - 1538
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (445 KB)

    After a general description of the major hardware elements of a minicomputer, the system is discussed from the viewpoint of a machine-language programmer. It is shown that the machine imposes certain constraints upon the programmer. These constraints are necessary in order to provide computation capability at a reasonable cost. In order to increase the power of the minicomputer without letting the... View full abstract»

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  • Fast register-transfer-module writable control store for microprogrammed computer design

    Publication Year: 1973, Page(s):1538 - 1543
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (538 KB)

    A fast microprogrammed sequencer for computer timing and control is described. This module can be made compatible with various commercially available computer modules. The design can provide sequencing times on the order of 120 ns for nonbranch microsteps, and is fully programmable. The sequencer provides multiway indexed branching and microsubroutine calls. The cost of the sequencer is relatively... View full abstract»

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  • Software production for minicomputers

    Publication Year: 1973, Page(s):1544 - 1556
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1366 KB)

    Although minicomputer hardware costs are rapidly decreasing, minicomputer software seems to be continuously increasing in cost. A contributing factor to this situation is a lack of recognition of the scope of the problem of software production, which must be considered to include analysis, design, implementation, integration, testing, delivery, and maintenance. Various tools for minicomputer softw... View full abstract»

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  • Executive systems and software development for minicomputers

    Publication Year: 1973, Page(s):1556 - 1562
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    This paper presents a tutorial survey of the function and construction of executive systems for minicomputers. A modular approach to the construction of device schedulers, swapping and multiprogramming supervisors, and file systems is emphasized. Considerable use is made of programming technology borrowed from large-scale computer systems, but specialized to the needs of small-scale minicomputer s... View full abstract»

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  • Data management software for minicomputer production monitoring and control systems

    Publication Year: 1973, Page(s):1563 - 1570
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (687 KB)

    A two-level software system for minicomputers suitable for use in real-time production monitoring and control applications has been designed and implemented. The first level consists of a general-purpose file system implemented in the form of a voluntary virtual memory which can be added to most minicomputer software systems. The second-level software is a set of data management primitives which p... View full abstract»

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  • Software for automatic testing using minicomputers

    Publication Year: 1973, Page(s):1570 - 1574
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Software implementation for automatic test systems controlled by minicomputers can be a costly and time-consuming process. A procedure for implementing software which tends to minimize costs and avoid delays caused by unexpected problems is described. The procedure consists of completely defining the test system functions and performing a series of hardware versus software tradeoffs during the des... View full abstract»

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  • GEMISCH—A minicomputer information support system

    Publication Year: 1973, Page(s):1575 - 1583
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (949 KB)

    An on-line minicomputer information system which has achieved diverse applicability in the medical environment is presented. The motivations for "total medical information systems" are enumerated. The controversy over large-scale computers versus minicomputers is addressed. The design goals and present capabilities of GEMISCH are discussed, and a survey of present applications is included to attes... View full abstract»

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  • Minicomputer-based laboratory for speech- intelligibility research

    Publication Year: 1973, Page(s):1583 - 1588
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    Some problems in speech-intelligibility research are discussed, and the advantages of using a dedicated minicomputer system for this research are pointed out. A minicomputer-based signal-processing laboratory in the Department of Computing and Information Sciences and Engineering at Case Western Reserve University, Cleveland, Ohio, is described. The system consists of a PDP®-11/45 ... View full abstract»

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  • The use of minicomputers in particle accelerators

    Publication Year: 1973, Page(s):1589 - 1596
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1478 KB)

    A substantial number of the world's research laborstories in low-, medium-, and high-energy physics have been among the earliest users of minicomputer data acquisition and control systems. A decade ago, the commercially available minicomputers were put to use gathering data from physics experiments using particle beams from accelerators. As early as 1965, engineers and physicists at several North ... View full abstract»

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  • The application of minicomputers in laser atmospheric experiments

    Publication Year: 1973, Page(s):1596 - 1601
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (654 KB)

    A minicomputer-based data acquisition and analysis system has been developed and applied to a variety of experiments involving the interactions between laser radiation and real and simulated atmospheres. This paper describes the system, its software, and main applications. System features include signal-analysis capability of both pulsed and continuous lasers, high data acquisition and computation... View full abstract»

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  • Laboratory computers in neurophysiology

    Publication Year: 1973, Page(s):1602 - 1614
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1697 KB)

    The conceptualization of the ongoing neuroelectric activity as a stochastic time series has provided a framework for the utilization of the small computer in the laboratory. Laboratory computers provide extensive computational, filing, and control capabilities which are being incorporated into the routine investigation of neurophysiological phenomena. The computational procedures implemented inclu... View full abstract»

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  • Minicomputer identification and timing of nerve impulses mixed in a single recording channel

    Publication Year: 1973, Page(s):1615 - 1621
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (835 KB)

    The use of a minicomputer on-line to identify and measure the time series of different nerve impulses mixed in a single recording channel is described. The study involves electrical discharges recorded simultaneously from two of the olfactory receptors found on the antenna of the male red-banded leaf roller moth. These receptor cells were stimulated by odors normally secreted by the female which h... View full abstract»

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  • A computer-controlled engine test cell for engineering experiments

    Publication Year: 1973, Page(s):1622 - 1626
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    A computer-controlled engine test cell was developed for conducting complex transient experiments with automotive engines. The test cell uses a minicomputer with a 16 000-word 16-b core memory to perform data acquisition and closed-loop control of the engine and dynamometer. A table-driven real-time control program is used to duplicate the effects of vehicle, transmission, and road on engine opera... View full abstract»

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  • The use of minicomputers in racetrack totalisator systems

    Publication Year: 1973, Page(s):1626 - 1633
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    A racetrack totslisator is described which is capable of processing 300 bets/s from up to 1000 ticket-issuing machines. The system contains minicomputers which provide high-reliability low-cost computing power, capable of supporting the requirements of any racetrack in the United States or Canada. The computers are duplexed. Both computers process every bet and operator action. Either computer can... View full abstract»

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  • Glossary of digital-computer terms

    Publication Year: 1973, Page(s):1633 - 1640
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    First Page of the Article
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  • Cross section of blunted cones

    Publication Year: 1973, Page(s): 1646
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    The axial backscattering cross section of semi-infinite cones blunted by conic section surfaces of revolution is calculated from physical optics. A single expression for cross section, a function of wavelength and the geometric parameters of the scatterer, applies to all tips. View full abstract»

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  • Aggregated power consumption in cable-communications systems

    Publication Year: 1973, Page(s): 1647
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (111 KB)

    An aggregation technique for computing the power required in a cable-communications system is described. Aggregation provides a relatively simple procedure compared with an exact network method. View full abstract»

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  • On reciprocal digital two-pairs

    Publication Year: 1973, Page(s):1647 - 1648
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    Some properties of a reciprocal digital two-pair, defined as a two-input two-output digital filter characterized by a symmetric transfer matrix, are outlined along with an interesting application. View full abstract»

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  • Stationary expression for scattering coefficients at uniform piezoelectric waveguide junction

    Publication Year: 1973, Page(s):1648 - 1650
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    By using a modified expression of the orthogonality relation between normal modes, the stationary expression for the scattering coefficients at the uniform piezoelectric waveguide junction is obtained by a procedure similar to that used in electromagnetic waveguides. By the Rayleigh-Ritz method, the scattering coefficients are expressed by simple expression. View full abstract»

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  • The effect of input beat frequencies on injection-locked oscillators

    Publication Year: 1973, Page(s):1650 - 1651
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    The effect of spurious leakage signals on injection-locked oscillators is discussed. The instantaneous frequency and instantaneous phase shift are derived to show when such signals have negligible effect. View full abstract»

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  • Photodarlington as a microwave detector

    Publication Year: 1973, Page(s):1651 - 1652
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (267 KB)

    The microwave detection characteristics of photodarlington 2N5780 series and MRD14B have been investigated in X band. The photodarlingtons produced a 10-dB better output than a conventional 1N23C point-contact detector. The mechanism of microwave detection was found to be due to the conventional potential barrier at the p-n junction rather than photovoltaic or conductive effects. View full abstract»

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  • Numerical calculation of the losses in optical resonators

    Publication Year: 1973, Page(s):1652 - 1653
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (185 KB)

    A hybrid technique utilizing the method of successive iterations in conjunction with a variational technique is used to calculate the losses in optical resonators. The method is described and the rate of convergence, accuracy, and saving in computer time are illustrated for a typical problem. View full abstract»

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North Carolina State University