Drawing Board

House Plan

Electricity Installation

High Precision Drawing

Housing Blue-print

Automobile

Transparency Drawings

Visual Effects

Machine Diagram

Landscaping

Image rendered with computer aided design

What Is CAD?

• Computer-aided design (CAD) is the use of computer technology for the design of objects, real or virtual.

• CAD often involves more than just shapes.

CAD Concepts and Usage

• CAD may be used to design curves and figures in two-dimensional ("2D") space; or curves, surfaces, and solids in three-dimensional ("3D") objects.

CAD is an important industrial art extensivelyused in many applications, such as:

1. automotive2. shipbuilding3. aerospace industries4. industrial and architectural design5. prosthetics and many more

• CAD is also widely used to produce computer animation for special effects in movies, advertising and technical manuals.

Overview• Current Computer-Aided Design software packages

range from 2D vector-based drafting systems to 3D solid and surface modellers.

• Modern CAD packages can also frequently allow rotations in three dimensions, allowing viewing of a designed object from any desired angle, even from the inside looking out.

• Some CAD software is capable of dynamic mathematic modeling, in which case it may be marketed as CADD — computer-aided design and drafting.

• CAD is used in the design of tools and machinery and in the drafting and design of all types of buildings, from small residential types (houses) to the largest commercial and industrial structures (hospitals and factories).

• CAD is mainly used for detailed engineering of 3D models and/or 2D drawings of physical components.

• CAD has become an especially important technology within the scope of computer-aided technologies, with benefits such as lower product development costs and a greatly shortened design cycle.

• CAD enables designers to lay out and develop work on screen, print it out and save it for future editing, saving time on their drawings.

CAD Technologies

• Originally software for Computer-Aided Design systems was developed with computer languages such as Fortran, but with the advancement of object-oriented programming methods this has radically changed.

• C PL with API’s

A CAD model of a mouse

Hardware and OS technologies

• AutoCAD for Windows• Vector Works on WIN and MAC• Right now, no special hardware is required for

most CAD software. However, some CAD systems can do graphically and computationally expensive tasks, so good graphics card, high speed (and possibly multiple) CPUs and large amounts of RAM are recommended.

Some Extensive Applications of CAD

The plans for this jet turbine engine were created with computer-aided design (CAD) software. Engineers can check the architectural details, slicing through any section of the engine’s computer-generated blueprint or viewing it from any angle.

Wind pressure on an automobile is simulated by Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) software. Red (on the nose of the automobile) indicates high pressures while blue indicates low pressures.

Graphics Rendering

• Raster Graphics, in computer science, a method of generating graphics in which images are stored as multitudes of small, independently controlled dots (pixels) arranged in rows and columns. Raster graphics treats an image as a collection of such dots.

• Vector Graphics, in computer science, a method of generating images that uses mathematical descriptions to determine the position, length, and direction in which lines are to be drawn. In vector graphics, objects are created as collections of lines, rather than as patterns of individual dots.