computer-aided design
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Computer-aided design (CAD) is the process of creating and developing products using computer technology rather than drawing them by hand. It matters because it allows designers and engineers to build, test, and refine products more efficiently before they are physically manufactured.
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A 2D CAD drawing A 3D CAD model
Computer-aided design (CAD) is the use of computers (or workstations) to aid in the creation, modification, analysis, or optimization of a design. This 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. Designs made through CAD software help protect products and inventions when used in patent applications. CAD output is often in the form of electronic files for print, machining, or other manufacturing operations. The terms computer-aided drafting (CAD) and computer-aided design and drafting (CADD) are also used.