Showing papers on "Electronic design automation published in 1969"

Computer-Aided Design of Broad-Band and Low-Noise Microwave Amplifiers

Abstract: The design of low-noise broadband microwave integrated amplifiers is particularly suited to the application of optimization techniques. Circuit theory is incapable of synthesizing these circuits, and bread-boarding is expensive as well as difficult. The analytical solution of microwave integrated circuits has been developed, and though complicated, is suitable for computer solution. It is then possible for the engineer to use a computer model of a circuit as a breadboard; however, with the many variables and the conflicting objectives of high flat broadband gain and low-noise figure it is best to leave the tuning of this breadboard to an optimization routine. This paper presents an objective function for the optimization of low noise broadband amplifiers. The effectiveness of this technique is demonstrated with examples.

Fault diagnosis of logical circuits

Abstract: Some new techniques for finding minimal set of tests which detect faults in combinational logic networks are described A systematic procedure which can be programmed on a digital computer is given Moreover, a new approach to the design of fault detection experiments for sequential machines which takes into account the actual construction of the sequential network is described

An Accumulator Chip

Abstract: A large-scale integrated-circuit chip has been designed under the sponsorship of the Air Force Avionics Laboratory. The chip was developed as part of a logic synthesizer effort of the Design Automation group at Litton Systems, Inc., Guidance and Control Systems Division. It was designed as a type or category to be multiply used with one other gating type chip whose format is prescribed by the logic synthesizer. A major goal of this effort will be to design a complete digital system by design-automated techniques using only these two types of chips in a large-scale array.

Design and Conception of Integrated Automated Cement Plants

Abstract: The subject of automation as related to the conception of cement plants is described in the light of its application in new plants. The influence it might have on existing installations is explained.

Mos LSI computer aided design system

Abstract: A design system employing computer aided design techniques, a Gerber digital photographic plotter, and an automatic LSI tester has been developed and used in logic design, layout design, mask generation, and testing, of complex MOS Large Scale Integrated circuit arrays. The system employs computer logic simulation for debugging machine logic and generating test tapes, and utilizes abbreviated input data techniques for generating array layout designs and photographic artwork masters. In this system a major portion of the creative array design work is performed manually and detailed design and analysis is performed by the computer. In the design of the computer process, major emphasis was placed on detecting design errors and violations of design rules. As a result of this approach a very flexible computer aided design system has been developed which provides highly accurate custom MOS complex array designs in reasonably short turnaround-time with a minimum of design errors. The system is designed so that more automation features, that will perform additional creative design steps, may be incorporated as they are developed. Due to its modularity, modifications which will take advantage of advanced circuits, advanced fabrication processes, and second source vendors may be carried out at appropriate intervals with minimum system development and reprogramming.