Texas Instruments TI-89 Titanium Graphing Calculator 

• Manufacturer  Texas Instruments
• MPN  TI-89
• Release Date  6/1/2004
• UPC  033317192038
• Graphing calculator handles calculus, algebra, matrices, and statistical functions
• 188 KB RAM and 2.7 MB flash memory for speed. plenty of storage for functions, programs, data
• Large 100 x 160 pixel display for split-screen views
• USB on-the-go technology for file sharing with other calculators and connecting with PCs
• Backed by 1-year warranty