We do not require any one particular brand or type of computer. If you have a computer, try using it first before buying a new one. Laptops are not essential, although they do offer advantages in terms of portability. However, some students have secured a desktop computer to their library carrel.
Memory is more important than processor speed.
Most of your school work involves and revolves around your use of a word processor. The more memory you have on your computer the better your word processor will perform. If you are on a budget, sacrifice processor speed to gain more memory. Carefully evaluate the vendor s warranty. If economically feasible I would suggest purchasing the 3 year warranty that many of the vendors offer.