Today, Computer Aided Design (CAD) is utilized in a variety of  fields. Engineers, architects, and industrialists have incorporated CAD  into complex designs for more efficiency and to save time.  Traditionally, designers used drafting machines (drawing tables), which  took a long time to produce blueprints. For example, if a designer made a  mistake on the drawing table, he/she would have to start from the  beginning.

When using CAD software, a mistake can be undone with a  click on the keyboard. When you see a new gadget being marketed in the  media, it most likely has a blueprint that was created using CAD  software. In contrast to the traditional way of creating blueprints, CAD  streamlined this process to deliver the new gadget to the end-user in a  much quicker time frame.

• Summarize what you found in your research. Explain how CAD is being used in general.
• How did the introduction and evolution of CAD change the design field for engineers?