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see computer-aided designcomputer-aided design
(CAD) or computer-aided design and drafting
(CADD), form of automation that helps designers prepare drawings, specifications, parts lists, and other design-related elements using special graphics- and calculations-intensive computer programs.
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(computer science)

computer-aided design (CAD)

The analysis and/or design, and/or modeling, and/or simulation, and/or layout of building design with the aid of a computer.



(Computer-Aided Design) Using high-speed desktop computers to design products. Either a mouse or graphics tablet is used for the physical drawing, and a scanner may be attached for additional input. The output of a CAD system is often electronically transmitted to a computer-aided manufacturing (CAM) system or 3D printer, which builds the objects (see CAD/CAM and 3D printing).

Generic or Specialized
CAD software is available for generic design or specialized uses, such as architectural, electrical and mechanical. The software may also be highly specialized for creating products such as printed circuits and integrated circuits.

Solid and Parametric Modeling
More complex forms of CAD are solid modeling and parametric modeling, which allows objects to be created with real-world characteristics. For example, in solid modeling, objects can be sectioned (sliced down the middle) to reveal their internal structure. In parametric modeling, objects have meaningful relationships with each other (a door must be on a wall, not the floor; holes cannot be drilled too close to the edge, etc.). See wireframe modeling, surface modeling, solid modeling, parametric modeling, graphics and CAE.

Two or Three Dimensions
While 2D CAD programs work for some applications, they are essentially the computer counterpart to hand-drawn objects. In contrast, 3D CAD enables objects to be drawn with sides, top and bottom so they can be manipulated as a whole and viewed from any angle.

From Rivets to Trees
Some CAD software suites can take the finished object and render it as a real-world entity. This building was designed in MicroStation Modeler and rendered in MicroStation MasterPiece from Bentley Systems. (Image courtesy of Bentley Systems, Inc. and Cooper Carry.)
References in periodicals archive ?
He unwillingly tries to memorize the prayer there, although he decides not to say Caddish and between the dichotomy of the cities he thinks England is his "true self", his "Buddha- nature".
He has been pigeon holed in roles calling for a diffident, occasionally caddish Englishmen.
ORLANDO Bloom is blooming into a baddie at last as he shows his caddish side in The Three Musketeers In 3D.
The XKR-S i s f a s t e r even than the bruising Aston N420 Vantage, and a sure sign that Jaguar want their cars to be caddish again.
In the much-acclaimed Mad Men, Hamm plays Don Draper, a caddish advertising whizz whose five-a-day include whisky, women and cigarettes, and whose smooth demeanour hides a shady past.
Georgia Brockway is cast as the Bennet's runaway daughter Lydia Lydia Bennet with Oliver Constance as the caddish Wickham.
Tenor John Arsenault convincingly portrayed the caddish and the charming sides of Pinkerton.
What was hard to fathom, however, was the casting of silver haired Stephen Rooke who, notwithstanding a rare pair of lungs, looked less like the caddish 20- something one might have expected Steva to be, and more like Kilroy - or, at best, Jeremy Kyle.
It comes off, you know," retorts Bowles, going on to explain that he has played many gangsters in his time - and proper, nasty gangsters, rather than your caddish Terr y-Thomas bounders.
Ruslan Zinevych, who also has the ability to conquer the void, plays her nemesis, the American Lieutenant Pinkerton, in a rather suitably caddish way, and Vladimir Dragos, as the US consul Sharpless, makes up the terrific trio for this well-loved tragedy.
Caddish British spy Pierce Brosnan, playing against his James Bond character, is banished to Panama after an illicit liaison with an ambassador's mistress, and uses devious means to persuade wellconnected tailor Geoffrey Rush to relay sensitive information about the future of the famous canal.