Modeling with CAD systems offers a number of advantages over traditional drafting methods that use rulers, squares, and compasses. For example, designs can be altered without erasing and redrawing. CAD systems also offer "zoom" features similar to a camera lens, whereby a designer can enlarge certain elements of a model to facilitate inspection. Computer models are typically three dimensional and can be rotated on any axis, much as one could rotate an actual three dimensional model in one's hand, enabling the designer to gain a fuller sense of the object. CAD systems also model cutaway drawings, in which the internal shape of a part is revealed, and illustrate the spatial relationships among a system of parts.To understand CAD it is also useful to understand what CAD cannot do. CAD systems have no means of comprehending real-world concepts, such as the nature of the object being designed or the functions that object will serve. CAD systems function by their capacity to codify geometrical concepts. Thus the design process using CAD involves transferring a designer's idea into a formal geometrical model. Efforts to develop computer-based "artificial intelligence" have not yet succeeded in penetrating beyond the mechanical - represented by geometrical (rule-based) modeling.With CAD, what can be changed without erasing and redrawing?What features do CAD systems offer to make certain elements bigger? With CAD systems, what part of the model can be revealed? What concept can’t CAD systems comprehend? What model can CAD systems transfer from a designer’s idea?

Task 2: Read the text, and then answer the questions with NO MORE THAN THREE WORDS.ADVANTAGES AND DISADVANTAGES OF CADModeling with CAD systems offers a number of advantages over traditional drafting methods that use rulers, squares, and compasses. For example, designs can be altered without erasing and redrawing. CAD systems also offer "zoom" features similar to a camera lens, whereby a designer can enlarge certain elements of a model to facilitate inspection. Computer models are typically three dimensional and can be rotated on any axis, much as one could rotate an actual three dimensional model in one's hand, enabling the designer to gain a fuller sense of the object. CAD systems also model cutaway drawings, in which the internal shape of a part is revealed, and illustrate the spatial relationships among a system of parts.To understand CAD it is also useful to understand what CAD cannot do. CAD systems have no means of comprehending real-world concepts, such as the nature of the object being designed or the functions that object will serve. CAD systems function by their capacity to codify geometrical concepts. Thus the design process using CAD involves transferring a designer's idea into a formal geometrical model. Efforts to develop computer-based "artificial intelligence" have not yet succeeded in penetrating beyond the mechanical - represented by geometrical (rule-based) modeling.With CAD, what can be changed without erasing and redrawing?What features do CAD systems offer to make certain elements bigger? With CAD systems, what part of the model can be revealed? What concept can’t CAD systems comprehend? What model can CAD systems transfer from a designer’s idea?

What does computer-aided design (CAD) software do in the 3D printing process?*Convert digital blueprintsGenerate digital hologramsEnhance image resolutionCompress data files

Read the text and answer the following questions with NO MORE THAN THREE WORDS AND/OR NUMBERS.Types of CAD SoftwareCAD or Computer Aided Design software was introduced in the late 1960's to expedite engineering drawing process. There are various flavors of CAD available today and there are different methods of classifying them. In this text, we divide CAD software into two main types:2 Dimensional CAD (2D CAD)2D CAD is the pioneer of CAD software, and was developed in the early 70s. At that time, major automobile, aerospace and other engineering companies developed in-house tools to automate repetitive drafting requirements. 2D CAD relies on basic geometric shapes like lines, rectangles, circles, etc. to produce flat drawings. These types of softwares have been first developed way back in 1970’s.3 Dimensional CAD (3D CAD)3D CAD is a step up from the 2D CAD software of yesteryears. As the processing power of computers increased and the graphic display capabilities improved, 3D CAD has become an increasingly popular design tool. 3D CAD allows creation of 3D images that are realistic. These images are called 3D models as they can be viewed and rotated in any direction – X, Y or Z. You can also display views from a 3D model, such as isometrics or perspectives, from any angle using 3D CAD. 3D CAD tools were introduced in 1980’s by a partnership between IBM-Dassults. 3D CAD quickly became popular because of enhanced visual capability.The rapid advancement of 3D software today has helped quick turnaround in product design, giving birth to the concept for product lifecycle management (PLM). A few of today’s leading 3D CAD software includes SolidEdge and SolidWorks. Of course, with the vast array of tools, professional training is needed to master these tools.When was CAD first used in engineering drawing process?

What does CAD assembly involve?Creating 2D sketchesDefining relationships between partsAdding intricate patterns to surfacesExtruding 3D objects from 2D profiles

What is the role of models in the design process? aAllows us to investigate the properties digitally before it is built physically bProvides a visual for all to see and helps them to see the viability of the idea cIncreases the probability of the part being constructed incorrectly dRepresents the accurate dimensions of the actual model