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AutoCAD is a suite of CAD software products for 2- and 3-dimensional design and drafting, developed and sold by Autodesk, Inc.. The original concept of AutoCAD in the 1980s was to promote customization and feature extensibility, and was what made it especially appealing to customers. Most contemporary CAD products at that time offered little if any customization capability and most were far more expensive.
Modern AutoCAD includes a full set of basic solid modeling and 3D tools, but lacks some of the more advanced capabilities of solid modeling applications. AutoCAD can be used as a platform for other products such as Bentley AutoPLANT and COADE CADWORX. AutoCAD is a vector graphics drawing program. It uses primitive entities — such as lines, polylines, circles, arcs, and text — as the foundation for more complex objects.
AutoCAD supports a number of application programming interfaces (APIs) for customization and automation. These include AutoLISP, Visual LISP, VBA, .NET and ObjectARX. ObjectARX is a C++ class library, which was also the base for products extending AutoCAD functionality to specific fields, to create products such as Autodesk Architectural Desktop, AutoCAD Electrical, or third-party AutoCAD-based applications.
AutoCAD's native file format, DWG, and to a lesser extent, its interchange file format, DXF, have become de facto standards for interchange of CAD data. AutoCAD in later years has adopted another file format known as DWF. These files allow selected DWG drawings to be compiled to one file. This allows distribution of the drawings to those without AutoCAD or similar packages. It also protects the drawings from manipulation by others as the drawings are rasterized inside the DWF file. DWF files can be viewed with a free program from Autodesk called "DWF Viewer" - this program allows users to both view and print DWF files. Another advantage of DWF files is that a large number of drawings can be compiled to a single DWF and be of a very small to reasonble file size for electronic distribution. In 2006, Autodesk estimated the number of active DWG files to be in excess of one billion. In the past, Autodesk has estimated the total number of DWG files in existence to be more than three billion.
AutoCAD currently runs exclusively on Microsoft desktop operating systems. Versions for Unix and Macintosh were released in the 1980s and 1990s, but these were later dropped. AutoCAD can run on an emulator or compatibility layer like Virtual PC or Wine, keeping in mind the performance issues that can arise when working with 3-dimensional objects or large drawings. AutoCAD exists in 14 language localizations, including many European and Asian languages.
Modern AutoCAD includes a full set of basic solid modeling and 3D tools, but lacks some of the more advanced capabilities of solid modeling applications. AutoCAD can be used as a platform for other products such as Bentley AutoPLANT and COADE CADWORX. AutoCAD is a vector graphics drawing program. It uses primitive entities — such as lines, polylines, circles, arcs, and text — as the foundation for more complex objects.
AutoCAD supports a number of application programming interfaces (APIs) for customization and automation. These include AutoLISP, Visual LISP, VBA, .NET and ObjectARX. ObjectARX is a C++ class library, which was also the base for products extending AutoCAD functionality to specific fields, to create products such as Autodesk Architectural Desktop, AutoCAD Electrical, or third-party AutoCAD-based applications.
AutoCAD's native file format, DWG, and to a lesser extent, its interchange file format, DXF, have become de facto standards for interchange of CAD data. AutoCAD in later years has adopted another file format known as DWF. These files allow selected DWG drawings to be compiled to one file. This allows distribution of the drawings to those without AutoCAD or similar packages. It also protects the drawings from manipulation by others as the drawings are rasterized inside the DWF file. DWF files can be viewed with a free program from Autodesk called "DWF Viewer" - this program allows users to both view and print DWF files. Another advantage of DWF files is that a large number of drawings can be compiled to a single DWF and be of a very small to reasonble file size for electronic distribution. In 2006, Autodesk estimated the number of active DWG files to be in excess of one billion. In the past, Autodesk has estimated the total number of DWG files in existence to be more than three billion.
AutoCAD currently runs exclusively on Microsoft desktop operating systems. Versions for Unix and Macintosh were released in the 1980s and 1990s, but these were later dropped. AutoCAD can run on an emulator or compatibility layer like Virtual PC or Wine, keeping in mind the performance issues that can arise when working with 3-dimensional objects or large drawings. AutoCAD exists in 14 language localizations, including many European and Asian languages.
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AutoCAD LT
AutoCAD LT is a "scaled down" version of AutoCAD originally designed for laptop computers, hence "LT, LapTop". It costs less (approx. $1200-$1800 USD versus around $4,000 USD for the full AutoCAD). It is also available for purchase at computer stores, unlike AutoCAD which has to be purchased from an official Autodesk dealer. It was developed so Autodesk could have an entry-level CAD package available to compete in that price class. Today AutoCAD LT is marketed as a CAD package for those who only need 2D functionality. Compared to the full edition of AutoCAD, AutoCAD LT lacks several features. Most notably, it has almost no 3D modeling capabilities (though it has a full suite of 3D viewing functions for looking at 3D models created in other CAD packages) and does not include any programming interfaces, such as support for most 3rd party programs and does not support LISP programs. A full listing of differences is on the Autodesk website. AutoCAD LT originated by taking the codebase of AutoCAD and commenting out substantial portions, which allowed AutoCAD and AutoCAD LT to be developed simultaneously.
AutoCAD LT
AutoCAD LT is a "scaled down" version of AutoCAD originally designed for laptop computers, hence "LT, LapTop". It costs less (approx. $1200-$1800 USD versus around $4,000 USD for the full AutoCAD). It is also available for purchase at computer stores, unlike AutoCAD which has to be purchased from an official Autodesk dealer. It was developed so Autodesk could have an entry-level CAD package available to compete in that price class. Today AutoCAD LT is marketed as a CAD package for those who only need 2D functionality. Compared to the full edition of AutoCAD, AutoCAD LT lacks several features. Most notably, it has almost no 3D modeling capabilities (though it has a full suite of 3D viewing functions for looking at 3D models created in other CAD packages) and does not include any programming interfaces, such as support for most 3rd party programs and does not support LISP programs. A full listing of differences is on the Autodesk website. AutoCAD LT originated by taking the codebase of AutoCAD and commenting out substantial portions, which allowed AutoCAD and AutoCAD LT to be developed simultaneously.
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AutoCAD Student Version
AutoCAD Student Version
AutoCAD is also sold at a significant discount to qualifying students. The student versions are identical to the full version of AutoCAD with the one exception of a plot stamp / banner that appears on all four sides of any printed drawings. The student version is available in two flavors: the 1 year Student Version costs around $160 and expires one calendar year after installation. The Academic Career License costs around $400 and does not expire.
Autodesk Student products are not for commercial use. Products include on-screen and print education disclaimers & print banners. Any blocks or cut/paste from a Student Product will transfer the banners to the new drawing, regardless of the license of the creating version. Student Portfolios do not include a printed manual.
As of September 2006, qualifying students can download some versions of AutoCAD for free from the Autodesk Student Community website. The download versions have the same restrictions as the paid for student versions but will continue to work for 2 years after installation
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