Scientific calculator delivers professional performance and flexibility, allowing you to switch between RPN and algebraic entry-system logic at any time. Ultimate pocket-size performer is completely programmable so you can work more efficiently with keystroke programming. Handle the heaviest workloads using 30KB of memory plus more than 800 independent storage registers. Store an equation and then use again to solve any variable using HP Solve application or use 100 built-in functions. Simplify physics with 42 built-in physical constants and a complete library of unit conversions. The HP 35S also features enhanced fractions mode, statistics and mathematics packages with base-n function. Large 2-line display offers adjustable contrast to easily view entries, results, menus and prompts. Get accurate results with edit/undo/delete capability. Enjoy a compact size and protective raised edges that are designed for the mobile profession. Calculator includes a premium carrying case.