When it comes to computers, one of the biggest reasons to have one is storage. For the price of one textbook (approx $200, from personal experience, yeah, textbooks are expensive), you can buy a 2 TeraByte (2 trillion byte) hard drive (http://ns1758.ca/winch/winchest.html). On that hard drive, You can store 7.813*10^9 (7813000000) pages of text (that's close to 1/10 the size of the ENTIRE library of congress) (http://www.wolframalpha.com/input/?i=2+terabyte). The average computer nowadays has around 100-200 GB of space (100-200 billion bytes) (from various advertisements and sales websites of major computer companies), which is enough to store 7.8*10^8 pages of information. (http://www.wolframalpha.com/input/?i=200GB+to+pages) With that kind of storage space, it’s possible to store every assignment you’ll ever need to turn in, plus music, movies, pictures and more.