This calculator offers new features, preloaded application, and even more versatility. A built-in USB port makes data transfer ultra-convenient. Plus, with three times the memory of the TI-89, you can store more application, data, and programs. The TI-89 Titanium's advanced functionality and 3-D graphing make problem-solving for AP, advanced mathematics, and engineering courses infinitely easier. It's the most powerful TI graphing calculator allowed for use on the AP Calculus, AP Statistics, AP Physics, AP Chemistry, PSAT/NMSQT, SAT 1 , SAT 2, and Math IC and IIC exams.The following applications are preloaded on this product: Cell-sheet, EE x Pro Finance, Language Localization, NoteFolio Organizer, Simultaneous Equation Solver, Symbolic Math Guide.Details:User-available RAM: 188 KBUser-available flash ROM: 2.7 MBDisplay resolution: 100 x 160Number of batteries: 4 AAA (not included)Includes full reference guidebookManufacturer warranty: 1 YEAR LIMITEDFeatures:Built-in USB port for data transfer3x the memory of the TI-893-D graphingTI Keyboard-compatibleCompatible with the TI-Navigator Classroom Learning System20 stored constants with symbolic units for scientific calculationsOver 100 symbolic units in 28 categories for use in equations, computations, and unit conversionsActive Calculator Home history screen can hold up to 99 previous entries for deep recall