Electronically upgradeable graphing calculator allows you to have the most up-to-date functionality & software applications. 16 preloaded graphing calculator software applications suitable for college math & engineering coursework. Memory management to create folders for specific applications or subjects. Icon desktop for easier access to applications & editors. Pretty Print shows equations & results with radical notation, stacked fractions & superscript exponents. Permitted for use on many state & standardized tests. Power Source(s): Battery; Display Notation: Graphic; Display Characters x Display Lines: 160 x 120; Memory: 188KB RAM; 2.7MB ROM.