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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 ?
IN the film Shakespeare In Love, actor Colin Firth plays the caddish Earl Wessex, a fictional character.
Kudelka's 1977 Washington Square, based on the Henry James novella about the making of a spinster, is straightforwardly and clearly rendered, with Rebekah Rimsay as the spinster and Ryan Boorne the caddish suitor, who first betrays her and then is himself rejected.
On the rebound from the caddish Moise, she was briefly married to a man named Barkeley Tobey about whom little is known.
The inspired instrumentation (which includes sinister organ chords, fuzzed-out bass lines, screeching pedal-steel guitar licks, crashing drum cymbals and sparkling piano notes) wonderfully accents White's caddish ways and his in-between-the-lines innuendoes.
He played caddish Ruari Galbraith in long-running soap Take The High Road for six years and painted in between.
Nothing if not resourceful, Pettigrew quickly adapts, proving her worth almost immediately as she helps her new employee avoid being caught cheating on Nick (Mark Strong), the caddish club owner in whose flat she's living and for whom she works as a singer.
It is, of course, about an unfortunate Geisha girl who gets involved with a caddish American naval lieutenant.
The journey of self-discovery, which bears an uncanny similarity to Bridget Jones's Diary, centres on an insecure media heroine prone to bouts of self-pity and tears and a caddish love interest who breaks her heart.
In contrast, Iris's journey of self-discovery, which bears an uncanny similarity to Bridget Jones's Diary - insecure media heroine prone to bouts of self-pity and tears, caddish love interest who breaks her heart - becomes less interesting as the film progresses.
Parish played Wessex Tonight's likeable news co-presenter Beatrice, who had to put up with the return to the studio sofa of Benedick - the arrogant oaf who'd dumped her in a caddish fashion three years earlier when he moved to London.
Last heard (but not seen) as the caddish Prince Charming in the globe-conquering animation blockbuster Shrek 2, he's now donning a wig and surrounding himself with spaniels to play King Charles II in the movie Stage Beauty.
He will not be playing the hero Mr Darcy ( instead he has been cast as the caddish Mr Wickham.