• Introducing TI's most powerful graphing calculator The TI-89 Titanium, offering new features, preloaded Apps, 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 Apps, 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 I , SAT II, and Math IC & IIC exams.
• Features;
• Electronically upgradeable graphing calculator gives you the most up-to-date functionality and software applications (Apps).
• 188K Bytes of user-available RAM .
• 2.7 MB of user-available Flash ROM for data archive and Apps (3x the Flash ROM memory of the TI-89).
• 100x160 Pixel display .
• Internal Clock with date and time display.
• Icon Desktop that allows easier access to Apps and editors.
• USB Port for computer connectivity, unit-to-unit communication with TI-89 Titanium graphing calculators, and more.
• I/O Port for communication with other TI products.
• USB unit-to-unit link cable included.
• TI Connectivity Cable included.
• Included Apps:
• Cell Sheet.
• EE Pro.
• Finance.
• French Localization.
• German Localization.
• NoteFolio.
• Organizer.
• Polynomial Root Finder.
• Simultaneous Equation Solver.
• Spanish Localization.
• Statistics with List Editor (English, French, German and Spanish versions)
• Study Cards.
• Symbolic Math Guide.
• Advanced Mathematics Software functionality is suitable  for college mathematics and engineering coursework.
• Pretty Print shows equations and results with radical  notation, stacked fractions, and superscript exponents.
• Active Calculator Home history screen can hold up to 99  previous entries for deep recall.
• Real and complex numeric results.
• Symbolic manipulation for algebra, calculus and differential equations.
• Over 100 symbolic units in 28 categories for use in equations, computations, and unit conversions.
• 20 stored constants with symbolic units for scientific calculations.
• Graphs functions, parametric and polar equations, recursively-defined sequences, 3-dimensional surfaces, and differential equations.
• Up to 99 graphing equations defined and saved for each graphing mode
• Numeric evaluation of functions in tables and data variable format.
• Interactive analysis of function values, roots, maximums,  minimums, integrals, derivatives, intersections, inflection points, and arc lengths.
• Recursively-defined sequences access any number of previous terms.
• Slope and direction fields for exploring differential equations.
• RK and Euler numeric differential equation solving methods.
• Real time rotation of 3-D surfaces.
• List-based one- and two-variable statistical analysis, including ten regression models .
• Statistics plots including scatter, xy-line, box and modified box plots. Histograms and regression lines are available.
• Matrix operations including inverse, determinant, transpose, augment, elementary row operations, an  reduced row echelon form. Matrix elements can be real or complex and numeric or symbolic .
• Advanced matrix operations including eigenvalues, eigenvectors, LU and QR decompositions.
• Column-logic expressions in data/matrix editor are retained for automatic recalculation when values change.
• Interactive numeric equation solver.
• Hexadecimal and binary operations and conversions.
• Extensive programming capability with number and size of programs limited only by available memory.
• 255 symbols in the character set including Greek, system, and international characters.