Computer Aided Design software packages are classified into 3 types — 2D drafting systems, mid-range 3D solid feature modelers and high-end 3D hybrid systems. The ever-changing face of the industry has ushered in the growth of many software packages. High-end systems have developed a user interface compatible with MS Windows.
Software for CAD systems was originally developed in a computer language called Fortran. This has radically changed with the development of Object-oriented programming methods. A number of the present day software packages are built around C programming language modules, with their own application- programming interface.
CAD software is used in a wide variety of applications, ranging from the development of prototypes, to the final design of entire automobiles. CAD is also used extensively in research, allowing engineers to understand at depth the problems they are attempting to solve, as well as consider solutions at a fraction of the cost of developing a physical model.
CAD software includes a set of basic 2D and 3D modeling tools. They use lines, circles, arcs and text as the foundation for forming objects or more sophisticated overlay programs. Software models for designers also include tools for sketching, modeling and visualization, all combined in one package and allow for data exchange with other CAD packages. CAD packages also incorporate toolboxes and animators, which animate the way components, explode or join, along with video output. They have Product Data Management and Collaborative Product Development functions.
Most CAD software allows the designers to test their designs on a computer before constructing the product. Design testing is carried out using ‘simulation’ software. When the design is run through simulation software, the computer displays the simulated item on the screen. It also checks whether or not the design can be manufactured successfully. Most designs have to be altered many times before they get on to the assembly line.
CAD software has revolutionized the work of technicians and engineers across industries and has become a vital tool in their creative endeavors.
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