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Computer-aided design – from the very beginning

Computer-aided design (CAD) is deployed for designing real and virtual objects. CAD often involves more than just shapes. The output of CAD ordinarily must also comprise symbols, for instance processes, dimensions and tolerances according to conventions of an application. CAD may be used to design curves and figures in two-dimensional (2D) space, or curves, surfaces and solids in 3-dimensional (3D) space.

Computer-aided design is effectively deployed in automotive, shipbuilding and aerospace industries, industrial and architectural design, prosthetics etc. CAD is also widely deployed to make computer animation for special effects in films, commercials and technical manuals. CAD is deployed for designing tools and machinery and for drafting and designing all types of structures, from small residential houses to large commercial and industrial buildings, for instance hospitals and factories. Computer-aided design is chiefly used for detailed engineering of 3D models or 2D drawings of physical constituents, but it is also deployed throughout the engineering process. CAD has grown into an exceedingly significant technology among computer-aided technologies, since it is cost efficient and time-saving.

In the late 1980s when the Computer-Aided Design programs became widely available, there started massive downsizing in drawing departments of some firms, in particular small and mid-size ones. A CAD operator could supplant three-five drafters still using traditional methods. Moreover, a number of engineers started to do their own drawing projects, hence the need for traditional drawing departments vanished. Consequently, a great many people were made redundant. Being rather expensive, the advances were principally purchased by large companies. Hence, small companies were unable to contend against giant companies that widely deployed CAD. Nowadays, hardware and software costs are reasonably priced. Even high-end software packages require cheaper platforms and some even support multiple platforms.