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