PG Calculator is a powerfull scientific calculator and an excellent replacement for standard calculator. It ofers full customizable user inteface and looks like real calculator on user desktop.
PG Calculator works in Algebraic and RPN modes. It works with integer, real and complex numbers, allows vectors manipulations. There are up to 120 units of measure with possibility to make conversions between consistent units (built-in Unit Converter and conversion functions). PG Calculator enables numbers inputing in binary, octal, hexadecimal and exponential formats. Up to 90 build-in functions: algebraic, trigonometry, hyperbolic, logical, binary, numbers format convertions, units of measure conversions and statistical. PG Calculator contains list of commonly used mathematic, physic and chemical constants and supports user-defined variables. Financial calculations are possible with built-in Time Value of Money Solver.  By the way: PG Calculator (Second Edition) 2.2 can be purchased with PayPal, Visa, Master Card, Wire transfer, Money Order just for $19.95
| 
