I think I better expand on this a little more. Yes, AutoCAD runs on a regular PC and yes plotters install like a regular printer (unless it’s a network plotter). That is where the similarity ends. If you are going to purchase AutoCAD you better plan on taking some courses to learn how to use it or hire someone who does. There is a huge learning curve with CAD software and proper plotting procedures are some of the hardest things to get down. Brows through some of the posts in the above link in all the different categories and you will see what I mean. I have spent 2-1/2 years actively learning this animal and I have become pretty proficient. But it’s been a long hard road in getting there. Be ready to devote the time to get the most for your very expensive investment.