Get professional performance from the ultimate RPN scientific programmable calculator. Switch between RPN* and algebraic entry-system logic at any time. The HP 35s features a two-line display, and the powerful HP Solve** application. Ultimate pocket size performerProfessionals and college students have the flexibility no other scientific calculator can offer with the choice of RPN or algebraic entry-system logic.? Choose between RPN or algebraic entry-system logic-no other scientific calculator offers both ? Completely programmable-work more efficientlywith keystroke programming ? Handle the heaviest workloads with ease using 31 KB of memory plus 800+ independent storage registers? Store an equation then use again to solve any variable using HP Solve or use 100 built-in functionsReliable performance and accurate resultsThe HP 35s delivers with a large 2-line alpha numeric display with adjustable contrast, raised edges to protect the keys, and a robust library of built-in functions and constants.? Large 2-line display with adjustable contrast to easily view entries, results, menus and prompts ? Simplify physics with 42 built-in physical constants,plus a complete library of unit conversions ? Get accurate results with edit, undo, delete capability ? Enjoy a compact size and protective raised edges that are designed for the mobile professional Power and functionality in oneSave time with an impressive array of programmable scientific functions. ? Use strong statistics functions for single and two-variable statistics, linear regression and more ? Use base-n functions for binary, octal, decimal and hexadecimal number calculation and conversion ? Power to calculate inverse functions, cube root, logarithms, exponents, factorials and more ? Take advantage of a powerful fractionHP quality and support Have confidence that every time you turn on your HP calculator, every calculation you make, res