Combines enhanced graphing capabilities with user-friendly computer features. Easy-glide touchpad works like a computer mouse for navigating screens, menus & objects. Included software allows calculator features to be downloaded to a home computer. Enhanced homescreen with scratchpad allows you to quickly perform calculations & graphs without saving your work. Explore on one screen up to four representations of a single problem, including algebraic, graphical, geometric, numeric & written. Quick-touch alpha keys at the bottom of the keypad. Power Source(s): Battery; Display Notation: Graphic; Number of Display Digits: 16; Display Characters x Display Lines: 16 x 8.