The principal objective of this course is to provide the student with an understanding of an overview of CAD, the major elements of CAD, and the capability to do the decision making of choosing a suitable CAD system. The course is organized as follows : An overview of computer-aided design system、The importance of computer-aided design、Numerical techniques related to CAD、Principles of computer graphics.、Surface modeling and solid modeling、General applications of CAD、The comparison between different CAD systems.