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IEEE Spectrum

Issue 11 • Date Nov. 1990

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Displaying Results 1 - 18 of 18
  • Defense: toward smaller, more deployable forces, as lethal as can be

    Publication Year: 1990, Page(s):30 - 33
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB)

    An examination is made of changes in the US defense establishment motivated by the Cold War's demise and the decline in military budgets, coupled with the danger of Third World conflict. Strategic revisions are discussed, and the goals that will direct future R&D are outlined. How to achieve long-term military stability in the changing environment is addressed.<> View full abstract»

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  • Defense: suppliers are challenged to downsize gracefully as they seek to diversify

    Publication Year: 1990, Page(s):33 - 36
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB)

    Transitional steps being considered by US industry in the face of reduced military spending are described. Virtually all major defense firms have begun laying off workers or have announced plans to do so, and many defense companies plan to diversity into, or expand their share of, nondefense work and contracting. The problems encountered by the defense industry when it attempted to diversify after... View full abstract»

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  • Designing with fuzzy logic

    Publication Year: 1990, Page(s):42 - 44
    Cited by:  Papers (53)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (585 KB)

    Fuzzy logic is examined, and its application to control systems is discussed. The steps taken to design a fuzzy controller are described, and the possibility of interfacing fuzzy logic to existing control systems is noted. Tools for developing and modeling fuzzy control systems are described.<> View full abstract»

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  • Needed DSP software emerges

    Publication Year: 1990, Page(s):52 - 59
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Digital signal processing (DSP) software packages are surveyed. The tools fall into two distinct categories, which correspond to the two main branches of digital signal processing: packages whose jobs are mainly signal acquisition and manipulation, and DSP programming environments. General-purpose math packages, which manipulate vectors and matrices, and can therefore perform signal processing, ar... View full abstract»

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  • Affordable analog design

    Publication Year: 1990, Page(s):60 - 67
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (769 KB)

    PC-based analog circuit design systems are discussed. Math tools for solving equations that describe the proposed behavior of the circuit, either symbolically or numerically, are described. Schematic capture programs for drawing blocks and circuits are surveyed, as are simulation packages. Tables giving information on representative packages are provided.<> View full abstract»

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  • EDIF grows up

    Publication Year: 1990, Page(s):68 - 72
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (486 KB)

    The Electronic Design Interchange Format (EDIF), now in its second revision and paving the way for universal data exchange among CAE tools, is examined. Translators can convert data files from a given design tool into EDIF as a standard format and from EDIF into the form needed by another design tool. The benefits of using EDIF for design capture tools, design analysis tools, and logic synthesizer... View full abstract»

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  • The case for CASE tools

    Publication Year: 1990, Page(s):78 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    The factors that are creating a demand for CASE (computer-aided software engineering) tools in all phrases of the software life cycle are identified. As CASE is beginning to extend its reach beyond software generation, the term is coming mean computer-aided systems engineering. The use of CASE in the typical software engineering process is described and CASE methodologies are briefly examined.< View full abstract»

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  • Board tools proliferate software

    Publication Year: 1990, Page(s):82 - 85
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (318 KB)

    The development of software tools for performing printed-circuit-board layout and analysis on PCs and workstations is discussed. Tables giving information on a representative sampling of available commercial packages are provided. The capabilities of current tools are briefly summarized.<> View full abstract»

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  • Displaying processed data

    Publication Year: 1990, Page(s):86 - 89
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Data acquisition software that can be used to capture, analyze, view, and assimilate data on product performance is discussed. The capabilities of such software are described. Tables giving information on representative packages are provided.<> View full abstract»

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  • User-friendly CAE

    Publication Year: 1990, Page(s):90 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    Efforts to devise a common framework of interface and management software that will make it easier for engineers and managers to use CAE tools productively are discussed. Tables describing representative packages for three such frameworks are given. These frameworks are the Falcon Framework created by Mentor Graphics Inc.; PowerFrame, a joint venture of Digital Equipment Corp. and Cadence Design S... View full abstract»

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  • How to select a microcontroller

    Publication Year: 1990, Page(s):106 - 109
    Cited by:  Papers (11)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (430 KB)

    A set of guidelines for the designer to use as a checklist for evaluating candidate devices is given. The first decision examined is the level of performance required, that is, on the word size of the controller. The second step is to identify the quantity, frequency, and type of all input/output (I/O) signals, as well as any other special requirements, including those imposed by mechanical aspect... View full abstract»

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  • Are you ready for next-generation dynamic RAM chips?

    Publication Year: 1990, Page(s):110 - 112
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (391 KB)

    The problems faced in developing 64 Mb DRAMs (dynamic RAMs), which will be required for the more powerful computers of the future, are examined. One of these is array noise, the unwanted disturbance in a memory IC generated by the normal movement of data within the array. Three approaches to the problem are described: the twisted bit line, shielding the bit lines from each other by placing the cel... View full abstract»

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  • Canon: more than just concern

    Publication Year: 1990, Page(s):113 - 116
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (465 KB)

    A profile is presented of Canon Inc., a Japanese company that has successfully diversified its product line away from the cameras with which it made its name. Among its products are digital color copiers, laser printers, and IC wafer-steppers. Canon, which operates six research centers in Japan plus R&D subsidiaries in the US and Europe, has grabbed 70% of the color printer market and is preparing... View full abstract»

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  • The great blue box phone frauds

    Publication Year: 1990, Page(s):117 - 119
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB)

    The use of an electronic device called the blue box to exploit a loophole in the nation's long-distance telephone network is recounted. To avoid long-distance charges, blue box users first dialed long-distance directory assistance, 800 numbers, or numbers that carried only a small toll charge. After the user dialed his number and was connected to a long-distance trunk, the blue box emitted a 2600 ... View full abstract»

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  • The frequency that wouldn't die hydroelectric generators

    Publication Year: 1990, Page(s):120 - 121
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (198 KB)

    North America's Niagara River is the site of operating 25 hertz hydroelectric generators that date to the dawn of the electrical age. The reasons why 25 Hz was chosen for such a large block of power and why that obsolete frequency has lived on for the better part of a century are examined. The reasons for its choice lie in the conditions and attitudes of the period, and it has remained because cha... View full abstract»

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  • Global R&D for a 21st century manufacturing system

    Publication Year: 1990, Page(s):122 - 124
    Request permission for commercial reuse | PDF file iconPDF (310 KB)
    Freely Available from IEEE
  • Japan telecommunications at the crossroads

    Publication Year: 1990, Page(s):126 - 128
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (378 KB)

    Changes introduced into telecommunications by digital technology since 1985, (when the Japanese Nippon Telegraph and Telephone Public Corp. was turned from a Government-owned monopoly to a private company, Nippon Telegraph and Telephone Corp. (NTT)) have led to a call for completely revamped approach. The main concern is to solve the problems of unequal competitive conditions existing between new ... View full abstract»

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  • EM simulators=CAE tools

    Publication Year: 1990, Page(s):73 - 77, 93
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    The emergence of vastly refined algorithms for finite-element analysis, which are putting electromagnetic simulators into the hands of any engineer who can afford a personal computer, is discussed. Field simulation allows an engineer to analyze the electromagnetic behavior of a device without building a physical prototype and taking measurements. The way in which simulation technology is changing ... View full abstract»

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