Enhanced version of the TI-83 Plus is permitted on many Standardized Tests. Keystroke-for-keystroke compatible with the TI-83 Plus. New style and an improved LCD. 2.5 times more speed than the TI-83 Plus. Three times more memory than the TI-83 Plus. Complete with USB cable for instant computer connectivity. Preloaded with more software for classes including Cabri Jr. interactive geometry software.