In this paper, we describe the design and implementation of a web-based electronic circuit simulation system named ECVlab. This system combines technologies as rich client technology, XML, and circuit simulation, and provides the user with vivid interface, convenient operation and powerful simulation capability. At the moment, ECVlab has been implemented and successfully applied in an undergraduate course in Zhejiang University and it was evaluated by undergraduate students. Students made statistically significant learning gains as a result of using ECVlab, and rated them positively in terms of improving operation capability, enhancing interests for digital circuit and offering opportunity to inspire innovation and exploration.

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