cad

Yes, CAD means Computer Aided Design. This is the real bourn of design. you can actualize your idea quickly and perfectly use the computer.in the last few years, CAD just can do computer aided drawings, that is not the goal of engineer. recently, because of coming out of the high quality computer software, CAD become the real trueth. in the powerful cad software, because it always integrate the design center, many kinds of liberary and Knowledgy and rules inside. So it is used widely and easily. and it become the powerful assistant of designer.