Showing papers on "Electronic design automation published in 1975"
12 May 1975
TL;DR: In this article, a new concept of practical design applicable to microwave circuits and involving, in general, simultaneous centering, tolerancing and tuning is presented, and the worst-case tolerance problem falls out as a special case.
Abstract: A new concept of practical design applicable to microwave circuits and involving, in general, simultaneous centering, tolerancing and tuning is presented. The worst-case tolerance problem falls out as a special case. With such an integrated approach, designs previously regarded as unrealistic might be made more attractive. Practical implementation involving, for example, nonideal components and uncertain reference planes is also treated in this paper from the tolerance point of view.
5 citations
TL;DR: The preliminary design process for a ship, which involves an iterative series of calculations based upon a data base that describes the hull shape, is a natural for design automation as mentioned in this paper.
Abstract: The preliminary design process for a ship, which involves an iterative series of calculations based upon a data base that describes the hull shape, is a natural for design automation. Figure 1 illustrates the spiralling nature of the design verification from basic requirements to final design of the ship and indicates the sequential nature of the calculations.
5 citations
TL;DR: The basic element of current hogging logic (CHL) has resulted in and given justification for a simple model approximating the injection performance and enabling quantitative design of even complex CHL circuits.
Abstract: Modeling of functional devices requires computer simulation of lateral and vertical device structure due to geometrical complexity. It not only must meet the requirements of network analysis programs, but also has to enable quantitative design. For the basic element of current hogging logic (CHL), the computer simulation of the two-dimensional situation has resulted in and given justification for a simple model approximating the injection performance and enabling quantitative design of even complex CHL circuits.
4 citations
01 Jan 1975
TL;DR: The status of design automation of electronics in three different companies and a university in Sweden is described, which produces high reliability semiconductor devices as integrated circuits, discrete transistors, diodes and opto electronic components.
Abstract: This paper describes the status of design automation of electronics in three different companies and a university in Sweden.Design automation of MOS circuits at Asea-Hafo (Ingmar Hoglund)Asea-Hafo is a company, which produces high reliability semiconductor devices as integrated circuits, discrete transistors, diodes and opto electronic components.During 1974 CMOS Large scale integrated circuits has become the main product. Asea-Hafo concentrates on custom designed circuits in volumes between 10.000 and 50.000 circuits per design and year.In order to be successful in the competition between producers of MOS circuits Asea-Hafo among other things has to offer a short time of delivery of prototypes and serial produced circuits.
4 citations
TL;DR: Early approaches to digital logic simulation were extremely expensive, difficult to use, and plagued with model inaccuracies; today's simulators have overcome these problems to varying degrees.
Abstract: Early approaches to digital logic simulation were extremely expensive, difficult to use, and plagued with model inaccuracies. Today's simulators have overcome these problems to varying degrees. This situation, combined with the ever-increasing complexity of today's technology, has prompted the acceptance of digital logic simulation as a mandatory tool in most design automation systems.
4 citations
01 Jan 1975
TL;DR: In accordance with the growth of complexity and amount of logic, computer-aided design of electronic computer became indispensable for designing and manufacturing and many design automation systems to support physical implementation design, manufacturing process and test process have been developed by computer manufacturers in Japan.
Abstract: In accordance with the growth of complexity and amount of logic, computer-aided design of electronic computer became indispensable for designing and manufacturing. Though many design automation systems to support physical implementation design, manufacturing process and test process have been developed by computer manufacturers in Japan, there are few reports on logic design of digital systems.To describe the functions or the macroscopic structure of digital systems, various kinds of language have been proposed but it seems difficult to describe digital systems in various stages of design by a single level of language. So languages which have several levels corresponding to various design stages had been proposed, (1)(2)(3) and automatic conversion of the language from a rough level to a fine level has been studied. Though they seem to be very helpful for designing large scale digital systems, further study seems necessary to put them into practical use. On the other hand it is almost impossible to design error-free large scale digital systems without using any kind of design verification tool such as logic simulators. However, logic simulation requires a lot of test data to verify the designed system and also needs a lot of computer time.
3 citations
01 Apr 1975
TL;DR: The standard cell design automation technique is described as an approach for generating random logic PMOS, CMOS or CMOS/SOS custom large scale integration arrays with low initial nonrecurring costs and quick turnaround time or design cycle.
Abstract: The standard cell design automation technique is described as an approach for generating random logic PMOS, CMOS or CMOS/SOS custom large scale integration arrays with low initial nonrecurring costs and quick turnaround time or design cycle. The system is composed of predesigned circuit functions or cells and computer programs capable of automatic placement and interconnection of the cells in accordance with an input data net list. The program generates a set of instructions to drive an automatic precision artwork generator. A series of support design automation and simulation programs are described, including programs for verifying correctness of the logic on the arrays, performing dc and dynamic analysis of MOS devices, and generating test sequences.
2 citations
2 citations
01 Jan 1975
TL;DR: The R and D laboratories of Società Italiana Telecomunicazioni Siemens spa are currently developing an automated facility oriented for manufacturing a telecommunication switching system called PROTEO, which is being designed and developed here.
Abstract: Now-a-days any large electronic system design invariably involves the support of automated facilities. The R and D laboratories of Societa Italiana Telecomunicazioni Siemens spa are currently developing such an automated facility oriented for manufacturing a telecommunication switching system called PROTEO, which is also being designed and developed here.Particular design aids for printed circuits; automated wiring, testing, production and diagnosis of printed circuit boards, testing and diagnosis of subsystems and generation of relevant documentation, have been implemented already. The next objective is to develop an integrated automation program (I.A.P.) with the help of a DATA-BASE and to review it for future procedural techniques.
01 Jan 1975
TL;DR: The state of the art in Italy of Design Automation, a field which has a direct impact with the industrial reality of the country, presents some difficulty in the acquisition of the informations, which often are confidential or secret.
Abstract: A paper, which wants to deal, in the most comprehensive way, about the state of the art in Italy of Design Automation, that is a field which has a direct impact with the industrial reality of the country, presents some difficulty in the acquisition of the informations, which often are confidential or secret.Therefore most of the informations, on which this paper is based, are from the open literature, and therefore report the situation of one or two years ago.
TL;DR: The set of design tools and practices collectively known as "design automation" had its origin twenty years ago and has expanded to include not only computer design, but also such diverse items as office space planning, ship building, land use, textile design, and computer software/firmware.
Abstract: The set of design tools and practices collectively known as "design automation" had its origin twenty years ago. The evolution of these practices as applied to the design of digital computers is nicely described by Preiss. 1 Since its inception, this field has expanded to include not only computer design, but also such diverse items as office space planning, ship building, land use, textile design, and computer software/firmware.
TL;DR: With thousands of design books available, covering all the electrical and electronics fields of interest, Spectrum decided to identify some of the top books, limited to five design areas, chosen because they are related to other articles in this issue.
Abstract: With thousands of design books available, covering all the electrical and electronics fields of interest, Spectrum decided to identify some of the top books. The list on these pages is limited to five design areas, chosen because they are related to other articles in this issue. The books were recommended after consultation with experts in computer-aided design and modeling, design automation, general systems design techniques, microwave design techniques, and power systems design techniques and planning. Books in these areas cover (and often overlap) such disciplines as decision review, decision analysis, and pattern matching.
01 Jan 1975
TL;DR: Although the above might indicate a far from fertile environment for Design Automation in Canada, some rather interesting developments in design automation are being carried out by Canadian universities, by Government agencies and by some Canadian-owned companies.
Abstract: An important characteristic of Canadian industry is that it is largely foreign-dominated. A result of this is that many products, that are manufactured in Canada, are designed elsewhere. Furthermore, since the development of design automation techniques and systems usually affects the whole corporation, this development is almost always done in the country in which its headquarters is established. As an example, consider the computer industry: although some major computer manufacturers have quite substantial research and development facilities in Canada, they are mainly users of Design Automation systems. The design and implementation of these Design Automation systems and the research into new Design Automation techniques is usually carried out in a central location. The same is true for companies in other fields of engineering. Although the above might indicate a far from fertile environment for Design Automation in Canada, some rather interesting developments in design automation are being carried out by Canadian universities, by Government agencies and by some Canadian-owned companies.
01 Jan 1975
TL;DR: In this article, the Association for Computing Machinery (ACM) granted permission to make digital or hard copies of portions of this work for personal or classroom use without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page.
Abstract: Copyright 2001 by the Association for Computing Machinery, Inc. (ACM). Permission to make digital or hard copies of portions of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyright for components of this work owned by others that ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permission to republish from: Publications Dept., ACM, Inc. Fax: +1 (212) 869-0481 or .