A combination of art, architecture and engineering in the field of science with the practice of business: CAD is the abbreviation for Computer Aided Design. Almost every industry uses computers to store and retrieve information. Computers are also used in design projects. Computer aided design (CAD), computer-based tools that use a wide range of engineers, architects and other design professions in their design activities is to assist. The main geometry authoring tool within the Product Lifecycle Management process and involves both software and occasionally special purpose hardware is. Current packages range from 2D vector based 3D solid and surface modelers designed the system. CAD design, develop and optimize products, which end consumers or intermediate goods used by the materials used in other products can be used. CAD is also extensively used in the manufacture of equipment and machinery equipment used in the design, and drafting and designing all kinds of buildings, small residential types (houses) for the largest commercial and industrial structures (hospitals and factories). Mainly 3D CAD models and / or physical components of the 2-D images is used for detailed engineering, but also the conceptual design and layout of products used in the process of engineering strength and dynamic components assemblies Through analysis of the definition of manufacturing methods. CAD has become a particularly important technology, computer aided technologies within the scope, low cost product development and as a very short design cycle with benefits. CAD enables designers to lay out and develop work on screen, print it out and in the future thus saving time to edit their pictures to save.