This paper describes a set of software tools well suitable for teaching graduate and undergraduate students the design of VLSI integrated circuits. The CAD system includes basic tools such as mask-level editor, on-line DRC, electrical parameter extractor and fast analog simulator. Unique tools such as a 3D process simulation and a logic cell compiler are also part of this package. We present in this paper an overview of those tools, essential matters for MOS devices, process simulation and show various examples of logic and analog circuit design. The implementation and performance evaluations are discussed in the last section. This system is successfully used by a large number of students in 15 Universities in Europe as an introduction to Computer-Aided Circuit Design.
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