<P> Computer - aided design (CAD) is the use of computer systems (or workstations) to aid in the creation, modification, analysis, or optimization of a design . CAD software is used to increase the productivity of the designer, improve the quality of design, improve communications through documentation, and to create a database for manufacturing . CAD output is often in the form of electronic files for print, machining, or other manufacturing operations . The term CADD (for Computer Aided Design and Drafting) is also used . </P> <P> Its use in designing electronic systems is known as electronic design automation, or EDA . In mechanical design it is known as mechanical design automation (MDA) or computer - aided drafting (CAD), which includes the process of creating a technical drawing with the use of computer software . </P>

Concept of cad as drafting and designing facility
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