This product includes two calculators: a general-purpose calculator and a programmer's calculator. Both are resizeable and provide plenty of space to work. They are suitable for very basic work as well as advanced calculations. The calculators are capable of working with real numbers, integers up to 64 bits, complex numbers, phasors, and unicode values. You can scroll back and retrieve previous lines for editing. Answers can stored in variables and can be displayed simultaneously in decimal, scientific notation, hexadecimal, octal, and binary. You can scroll back to see your previous lines. You can even save your work to a file. It includes many operators, functions, and constants in both MKS and CGS units.