That is the computer aided design (CAD) ofelectronic circuit in 70s, the computer aided engineering (CAE) in 80s and theelectronic system design automation (ESDA) in 90s.
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- 电子线路的CAD(计算机辅助设计)是EDA发展的初级阶段,80年代初期,形成了CAE--计算机辅助工程。 也就是所谓的EDA技术中级阶段。