● A CAD program is a computer technology that designs a product and
documents the design phase of the engineering process.
● CAD may facilitate the manufacturing process by transferring detailed
diagrams of product’s materials, processes, tolerances, and dimensions.
● It can be used to produce either 2D or 3D diagrams, which can then be
rotated to be viewed from any angle, even from the inside looking out.
● Computer-Aided Design is the use of computer systems to assist in the
creation, modification, and optimization of design.
● This is often considered an engineering software program.
Modern CAD Programs can improve the following:
Increase the Productivity of the Engineer
Improve the Quality of Design
Improve Communications through Documentation
Create a Database for Manufacturing
CAD output is often in the form of electronic files for print, machining, or other
Modern CAD programs for mechanical design uses either vector-based graphics
for objects, or may produce raster graphics showing the overall appearance of
However, engineering software programs require more than just shapes.
As in the manual drafting or technical and engineering drawings, the output of
CAD programs must convey information, such as materials, processes, dimensions,
and tolerances, according to application-specific conventions.
CAD is important industrial art extensively used in many applications, including
automotive, shipbuilding, and aerospace industries, architecture, prosthetics, and
Modern CAD Programs Uses
integrated modules or stand-alone products such as:
1. Computer-Aided Engineering (CAE)
2. Computer-Aided Manufacturing (CAM)
3. Photo Realistic Rendering