- Graphing calculator
- memory backup battery
The TI-89 Titanium offers more versatility. A built-in USB port makes data transfer ultra-convenient. 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 a 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 and IIC exams.