How Computer changed

So today I have been doing the time line showing how the computer has changed and how it was developing.

What is a computer system?

Computer Aided Design

CAD stands for Computer Aided Desing. It might me used by engeneers, programmers, designers, architects, and some other profesions. The advantages of CAD is that it is much safer, so you can plan what are you going to build before atually building it, so you can finds correct proportions, mass, so your building\structure does not collapse. I learned how to create rectangles, circles, paint bucket, and push\pull tool. Hoping to improve and learn more about using and working on Google ScetchUp.