TechCalc is the "Swiss Army Knife" of Scientific Calculators ... 44 Calculation Options + a Scientific Reference Section + the Periodic Table of the Elements! Perfect for all aspects of scientific and engineering calculations in school, university and throughout your career. Why not download it now and give it a try? Modes included in the main menu are: ● Basic Calculator - Algebraic and Reverse Polish Notation (RPN), ● Scientific Calculator - Algebraic and Reverse Polish Notation (RPN), ● 64