Visualize concepts clearly & make faster, stronger connections between equations, data, & graphs in full color. Electronically upgradeable graphing calculator allows you to have the most up-to-date functionality & software applications. Built-in MathPrint ™ functionality allows you to input & view math symbols, formulas & stacked fractions exactly as they appear in textbooks. TI graph link offers increased capacity & speed. Advanced functions accessed through pull-down display menus. Horizontal & vertical split screen options. USB port for computer connectivity, unit-to-unit communication. Power Source(s): Battery; Display Notation: Graphic; Number of Display Digits: 10; Display Characters x Display Lines: 26 x 10.