Abstract
With the spread of 2D-CAD, the quality of the drawing in a development design stage changes completely, the process of a development design itself can distort with the spread of 3D-CAD, and it is in the tendency which is missed and goes. Then, into the Mitsubishi Electric group, although spread promotion of whole company-3D-CAD is performed since the '96 fiscal year, since the operation education is improved completely, can progress, it has set centering on the direction, the system with an orthodox development design which narrows down operation of CAD to the degree of required minimum is adopted for five days of beginners' class education and the big effect is mentioned since the last fiscal year, it reports here.