The TI-84 Plus CE is an updated version of the TI-83 Plus. Keystroke-for-keystroke compatible with the TI-83 Plus, but with 2.5 times the speed and 3 times the memory. Features 7 different graphing styles. Offers lots of functions, including equation solving. Includes functions such as financial, trigonometry, statistical, graphic, forecasting, engineering, logarithm and hyperbolic. Comes preloaded with software for a variety of courses. Includes interactive software for geometry. USB cable included for computer connectivity. Permitted for use on many state and standardized tests.