TI's most advanced scientific calculator is ideal for engineers, students & professionals. MultiView display allows you to view multiple calculations at the same time while MathPrint feature shows math expressions, symbols & stacked fractions as they appear in textbooks. Input data, scroll through entries & make edits like using a graphing calculator. Toggle key converts fractions & square roots into decimals & back. Power Source(s): Battery; Solar; Display Notation: Engineering; Scientific; Number of Display Digits: 16; Display Characters x Display Lines: 16 x 4.