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A Structured Methodology for Local Network design engineering

Journal of Systems engineering and Electronics 1992年第1期3卷 64-72页

作者： Li LayuanWuhan University of Water Transportation engineering, Wuhan 430063, China Wuhan University of Water Transportation engineering Wuhan 430063 China

This paper presents a structured methodology for local network design engineering (SMLNDE). A complex and fuzzy project for local network design can be decomposed into a set of simple and particular activities using the SMLNDE. The SMLNDE allows rigorous requirements definition and permits the exhaustive consideration of the large number of factors influencing local network design engineering. The complete and clear design documentations and an optimal design can also be provided by the methodology. The SMLNDE has been implemented using the structured analysis and design technique. The study shows that the SMLNDE is an effective design methodology for the large and complex local networks.

关键词： Local network design engineering Structured methodology.

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Theory of Current Transmission Switches and Its Application to design of a Novel Current-Mode CMOS Ternary Schmitt Trigger

Theory of Current Transmission Switches and Its Application ...

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2005 6th International Conference on ASIC

作者： Guoqiang Hang Department of Information and Electronic engineering Zhejiang University

＜正＞Guided by the switch-signal theory,this paper introduces design theory suitable for current-mode CMOS circuits at switch *** this basis,the operations of current transmission switch used to describe the action of threshold-controllable switch in Schmitt trigger are established,and a novel current-mode CMOS ternary Schmitt trigger with ternary output current or/and voltage signal is *** two hysteresis current values of ternary Schmitt trigger are controlled by only sizing the transistor aspect *** main properties of the circuit are its simple structure,fully adjustable hysteresis and suitable for low-voltage applications.A design example and the HSPICE simulation results with a power supply of 1.5V are given.

关键词： Switches Trigger circuits Switching circuits Hysteresis MOSFETs Power supplies Optical noise Optical control design engineering Threshold voltage

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