OVERVIEW

Calculator is the easy-to-use free powerful software for getting your calculations done.
You  can use Calculator as a tool for the numerical solution of technical problems.
You don't need to learn complicated commands or a new syntax-just write the expession and select the type of calculation. 

Features:

• 5 standard operators +, -, *, / and ^
• 27 of arithmetic, logarithmic and exponential functions, trigonomeric and hyperbolic functions and other functions
• numerical integration and numerical differentiation,
• 2D plots of expressions
• user-definable variables
• editor with syntax highlight and code completion (thanks to SynEdit) 
  

The Calculator workspace