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Study Guide Project By: Ryan Carrier
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Board and Computer Aided Drafting
Traditional drafting involves drawing by hand using a drawing board and precision instruments. Computer-aided drafting has taken over almost exclusively in industry.
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Computer-Aided Drafting or Design
The acronym CAD - used to stand for Computer Aided Drafting. Then over time as software became more sophisticated the acronym was changed to CADD - Computer aided drafting and Design. The Introduction to CAD Technology course refers to Computer Aided Drafting.
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Advantages of CAD Use Because of its electronic nature, CAD can do much more than board drafting. . It is flexible enough to assist all phases of the design process. It can drive the manufacturing stage as well.
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Production Input With the help of CAD, computers now control many production processes. The machine produces a finished product according to the specifi cations in the CAD file.
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Plan Extraction A virtual solid model does not do some things well. For example, it cannot tell a quality control inspector at a glance what the diameter of a specific hole should be. The two-dimensional drawings must be consulted for such purposes.
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Disadvantages of CAD Use
Using CAD does have a few disadvantages. One of the most common problems has nothing to do with the software. it concerns how people perceive the CAD system.
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CAD Hardware Equipment
All CAD workstations require computer hard wear. the equipment that comprises a computer system. An output device such as a plotter or printer is an example of a peripheral.
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The CPU he CPU (Central Processing Unit) is the “heart” of the computer. This is where the computations which make up the “work” of a computer are processed.
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Monitors The computer monitor is the display device for a CAD workstation. A CAD monitor should be at least 17″, large enough to display drawings or parts of drawings effectively.
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Resolution A pixel is a set of one red, one blue, and one green dot.
The more pixels a monitor displays per inch, the higher the quality of the image on the screen.
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Input Devices The most common input devices for CAD workstations are the keyboard, the mouse, and the digitizer. Digitizers are specialized equipment used to convert paper drawings to digital format.
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Printers and Plotters Aster and inkjet technologies have become the standards for printing technical drawings. They replaced pen plotters which were first used to print CAD drawings.
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CAD Software n addition to hardware, a CAD system require the computer programs used to create technical drawings, or the CAD software. The software determines a CAD system’s drafting capabilities, so you should select it carefully.
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