Type of computer needed for GT engineering?

I plan to attend GT in the fall for Industrial Engineering and want to know what kind of computer I will need? Windows or Mac? Will I need more processing power for any sort of big programs? Or will I need the extra battery life?

Here is the current GT requirements. Although it may change by fall 2015. DS is a EE major. We bought him a decent
Lenovo in 2013. However he took his old HP laptop as a backup which I think is now 6 years old. Anyway it can still run all the programs he needs for classes. So he uses both. So I guess my advice would be to buy a decent laptop but to think about having an older backup one just in case your good one has a problem.

http://sco.gatech.edu/downloads/SCO_2014_final.pdf

Thank you! That was very helpful!