Computer-aided design (CAD) is the use of a wide range of
computer-based tools that assist engineers, architects and other
design professionals in their design activities. It is the main
geometry authoring tool within the Product Lifecycle Management
process and involves both software and sometimes special-purpose
hardware. Current packages range from 2D vector based drafting
systems to 3D parametric surface and solid design modelers.
Laptop Battery CAD is sometimes translated as "computer-assisted",
"computer-aided drafting", or a similar phrase. Related acronyms
are CADD, which stands for "computer-aided design and drafting",
CAID for Computer-aided Industrial Design and CAAD, for
"computer-aided architectural design". All these terms are
essentially synonymous, but there are some subtle differences in
meaning and application.
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Thinkpad CAD is used to design and develop products, these can be goods
used by end consumers or intermediate goods used in other products.
CAD is also extensively used in the design of tools and machinery
used in the manufacture of components. CAD is used throughout the
engineering process from conceptual design and layout, through
detailed engineering and analysis of components to definition of
manufacturing methods.
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Microsoft History
Cutting Edges Clubhead Designs at Great Prices Beginning in CAD (Computer Aided Design) and finalized during actual course playing conditions, our designs undergo the most rigorous of testing procedures to ensure optimal distance, feel and accuracy. Hireko does not pour millions of dollars into expensive tour players or television commercials, thus we are able to pass along the savings to the customer.
Laptop Computers Designers have long used computers for their calculations.
Initial developments were carried out in the 1960s within the
aircraft and automotive industries in the area of 3D surface
construction and NC programming, most of it independent of one
another and often not publicly published until much later. Some of
the mathematical description work on curves was developed in the
early 1940s by Isaac Jacob Schoenberg, Apalatequi (Douglas
Aircraft) and Roy Liming (North
American Aircraft), however
probably the most important work on polynomial curves and
sculptured surface was done by Pierre Bezier (Renault), Paul de
Casteljau (Citroen), S.A. Coons (MIT, Ford), James Ferguson
(Boeing), Carl de Boor(GM), Birkhoff(GM) and Garabedian(GM) in
the 1960s and W. Gordon (GM) and R. Riesenfeld in the 1970s.
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Laptop Computer It is argued that a turning point was the development of
SKETCHPAD system in MIT in 1963 by Ivan Sutherland (who latter
created a graphics technology
company with Dr. David Evans).
The distinctive feature of SKETCHPAD was that it allowed the
designer to interact with computer graphically: the design can
be fed into the computer by drawing on a CRT monitor with a
light pen. Effectively, it was a prototype of graphical user
interface, an indispensable feature of modern CAD.
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Desktop Computer First commercial applications of CAD were in large companies in
the automotive and aerospace industries, as well as in electronics.
Only large corporations could afford the computers capable of
performing the calculations. Notable company projects were at GM
(Dr. Patrick J.Hanratty) with DAC-1 (Design Augmented by Computer)
1964; Lockhead projects; Bell GRAPHIC 1 and at Renault (Bezier) -
UNISURF 1971 car body design and tooling.
Notebooks The most influential event in the development of CAD was the
founding of MCS (Manufacturing and Consulting Services Inc.) in
1971 by Dr. P. J. Hanratty, who wrote the system ADAM (Automated
Drafting And Machining) but more importantly supplied code to
companies such as McDonnell Douglas (Unigraphics)
Computervision(CADDS), Calma, Gerber, Autotrol and Control
Data.
Lenovo As computers became more affordable, the application areas have
gradually expanded. The development of CAD software for personal
desk-top computers was the impetus for almost universal application
in all areas of construction.
Hard Drive Other key points in the 1960s and 1970s would be the foundation
of CAD systems United Computing, Intergraph, IBM, Intergraph IGDS
in 1974 (which led to Bentley MicroStation in 1984)
Travelstar CAD implementations have evolved dramatically since then.
Initially, with 2D in the 1970s, it was typically limited to
producing drawings similar to hand-drafted drawings. Advances in
programming and computer hardware, notably solid modelling in the
1980s, have allowed more versatile applications of computers in
design activities. Key product for 1981 were the solid modelling
packages - Romulus (ShapeData) and Uni-Solid (Unigraphics) based on
PADL-2 and the release of the surface modeler Catia (Dassault).
Autodesk was founded 1982 by John Walker, which led to the 2D
system AutoCAD. The next milestone was the release of Pro/Engineer
in 1988, which heralded greater usage of feature based modeling
methods. Also of importance to the development of CAD was the
development of the B-rep solid modeling kernels (graphics engines)
Parasolid(ShapeData) and ACIS (Spatial Technologies) at the end of
the 1980s beginning of the 1990s, both inspired by the work of Ian
Braid. This led to the release of mid-range packages such as
SolidWorks in 1995 SolidEdge (Intergraph) in 1996.
Gateway Today CAD is not limited to drafting and rendering, and it
ventures into many more "intellectual" areas of a designer's
expertise.
Laptop Parts Software providers today This is an ever changing industry with
many well know products and companies being taken over and merged
with others. There are many CAD software products currently on the
market. More than half of the
market is however covered by the four main PLM corporations
Autodesk, Dassault Systemes, PTC, and UGS Corp., but there are
many other CAD packages with smaller user bases or covering
niche user areas.
Software Packages are can be classified into 3 types: 2D drafting systems
(e.g. AutoCAD, Microstation); mid-range 3D solid feature modellers
(e.g. SolidWorks, SolidEdge, Alibre); and high-end 3D hybrid
systems (e.g. CATIA, NX (Unigraphics)). However these
classifications cannot be too strictly taken as many 2D systems
have 3D modules, the mid-range systems are increasing their surface
functionality, and the high-end systems have developed their user
interface in the direction of interactive Windows systems.
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