1. Technology Interactions ‹ Chapter Title Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Technology Interactions Computer-aided design uses computer systems to design products and create the drawings needed for the products to be manufactured.

2. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. CAD is the process of designing and drafting on a computer. CAD is quicker and more accurate. It has largely replaced hand drafting. What Is Computer-Aided Design?

3. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. CAD Advantages Saves time Is more accurate Improves team communications Can help determine if a design will actually work

4. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. The CAD System Hardware ♦ Input devices, such as a keyboard and mouse ♦ Output devices, such as a monitor and a printer or plotter Software The computer is the main component. It has these subsystems:

5. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Two-Dimensional (2D) CAD Can show only two dimensions of an object: ♦ Width and length ♦ Width and height ♦ Length and height Frequently being replaced by systems that can do both 2D and 3D design.

6. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Three-Dimensional (3D) CAD Wireframe models resemble “stick figures.”

7. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Three-Dimensional (3D) CAD Surface models can look like the shape of the object.

8. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Three-Dimensional (3D) CAD Solid models show the shape, area, and volume of an object.

9. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Using 3D CAD Mechanical design CAD/CAM Rapid prototyping Architectural design

10. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Mechanical Design This engineering activity includes design of individual parts, assemblies, and entire devices. Design often begins with computer 3D sketches that are then refined and modified, and then final details are added. The final step may be a rendering.

11. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. CAD/CAM This process combines computer-aided design and computer-aided manufacturing. Designs go directly from the CAD computer to another computer that controls the machine that makes the actual part.

12. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Rapid Prototyping Uses CAD data to create physical models for communicating ideas or to test designs.

13. Technology InteractionsChapter 2 Computer-Aided Design Copyright © Glencoe/McGraw-Hill A Division of The McGraw-Hill Companies, Inc. Architectural Design Has commercial and residential applications. Can provide client(s) with realistic interior and exterior appearances of a planned structure.