One of the objectives was to create a CAD system as open as possible. The main idea was to create a CAD program for a price of 1000 able to run on PC. Later the product was purchased by CalComp and renamed to CADVANCE. The computers price was about 125,000, and the first commercial CAD systems resellers started to be formed. This decade was the time when the basic CAD features were formed especially the fundamental geometric algorithms. Its major advance over CADAM was real approach to 3D modelling. It provided basic 2D modeling drafting functionality and supported 14 layers. It is necessary to mention at least Applicon, Auto-trol, Computervision (sold its first commercial CAD system to Xerox), Evans Sutherland, MAGI (released commercial 3D CAD Syntha Vision), McAuto, SDRC and United Computing (nowadays known as UGS). Lotus notes download crackĪlthough DAC was said to be incredibly useful at its time, GM discarded the system when it upgraded its hardware. It was the first CADCAM system using interactive graphics (enabled to type car description, rotation, and viewing from different angles). It was priced at 500,000 per unit (only a very few units were ever sold). Input commands were done with an electronic light pen and a large disk memory device used to refresh the graphic display.
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