WHAT IS AUTOCAD & WHY ??
Computer-aided design (CAD) is a computer technology that designs a product and documents the design's process. CAD may facilitate the manufacturing process by transferring detailed diagrams of a product’s materials, processes, tolerances and dimensions with specific conventions for the product in question. It can be used to produce either two-dimensional or three-dimensional diagrams, which can then when rotated to be viewed from any angle, even from the inside looking out. A special printer or plotter is usually required for printing professional design renderings.
The concept of
designing geometric shapes for objects is very similar to CAD. It is called
computer-aided geometric design (CAGD).
CAD is also known as computer-aided
design and drafting (CADD).
CAD is used as
follows:
1.
To produce detailed engineering designs
through 3-D and 2-D drawings of the physical components of manufactured
products.
2.
To create conceptual design, product layout,
strength and dynamic analysis of assembly and the manufacturing processes
themselves.
3.
To prepare environmental impact reports, in
which computer-aided designs are used in photographs to produce a rendering of
the appearance when the new structures are built.
CAD systems exist
today for all of the major computer platforms, including Windows, Linux, Unix
and Mac OS X. The user interface generally centers around a computer mouse, but
a pen and digitizing graphic tablet can also be used. View manipulation can be
accomplished with a spacemouse (or spaceball). Some systems allow stereoscopic
glasses for viewing 3-D models.
Most U.S. universities no longer
require classes for producing hand drawings using protractors and compasses.
Instead, there are many classes on different types of CAD software. Because
hardware and software costs are decreasing, universities and manufacturers now
train students how to use these high-level tools. These tools have also
modified design work flows to make them more efficient, lowering these training
costs even further.
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