Texas Instruments TINSPIRETP TI-Nspire Math and Science Handheld Graphing Calculator with Touchpad TEXTINSPIRETP TEX TINSPIRETP, Combines enhanced graphing capabilities with user-friendly computer features. Easy-glide touchpad works like a computer mousefor navigating screens, menus and objects. Included software allows calculator features to be downloaded to a home computer. Enhanced homescreen with scratchpad allows you to quickly perform calculations and graphs without saving your work. Explore on onescreen up to four representations of a single problem, including algebraic, graphical, geometric, numeric and written. Quick-touch alpha keys at the bottom of the keypad. Power Source(s): Battery; Display Notation: Graphic; Number of Display Digits: N/A;isplay Characters x Display Lines: 16 x 8., UPC 033317202362