A Powerful Tool
The TI-84 is a very powerful tool. It has a lot of capabilities, including the obvious such as graphing and solving complex equations. However, there are some hidden features in this calculator, including the games you can play on it (ok, they're not the best, but they do exist!) and the equations and formulas you can program into the calculator. I've used this calculator for over 5 years now and I have never been disappointed!