CAD drawing contains all concepts underlying paper drawings, and more. With the use of CAD software, CAD drawings allow users to modify parts of a flexible design or model without repeating it entirely. Thus, CAD conversion from manual to electronic is very beneficial. Digital CAD files, especially those that contain 3D views, provide a lot of information that are helpful in determining errors. They are very useful in architectural designs where users can redraw them when the need to modify the designs arises.

Reference:
Prahlad Parmar. “CAD Conversion Services and Its Benefits.” Online posting. 27 May 2010. ArticlesBase. 20 July 2010 <http://www.articlesbase.com/business-opportunities-articles/cad-conversion-services-and-its-benefits-2480709.html>.