Natural Calculator is a unique, powerful, and simple program for solving various
mathematical tasks. Unlike any other such programs, Natural Calculator does
calculations the same way you do them on paper. That’s because it uses
conventional graphical mathematics syntax instead of string. Because Natural
Calculator is an all-in-one solution to everything from everyday arithmetic to
engineering solving, different people can use it for various jobs.

This program can be used by the home user for everyday calculations, students for solving
educational tasks, engineers for complex calculations using units, and scientists
for scientific computations.

Main features:

* Natural Calculator's on-screen interface is a blank on which you can enter text
or mathematics expressions in handy graph view. The expressions are output the
same as on paper.
* Results may have any predetermined number of digits and precision. You can
define them for the whole document or for a separate expression. There are
practically no limits on significant digits, result accuracy, or exponential threshold.
* Computations can be performed with the following numbers: scientific (numbers
have floating point with any precision), integer (binary, octal, decimal, or
hexadecimal notations), rational (result is a vulgar fraction), complex (result
is present in arithmetic, trigonometric, or exponential form).
* Angular measure may be defined for a separate number, an expression result, or
the whole document.

* There are built-in constants and functions. They are defined for different
number notations, and they can have maximum accuracy.
* User variables and functions are useful. You can define them easily and use
them in your computations. You can redefine built-in constants and functions
also.
* Natural Calculator uses units of measurement. There are built-in and user
units. You can define your own units or redefine existing ones. You can convert
units within one unit system or from one to another system. You can define your
own unit systems and use their units in your job.
* The program uses handy automatic recompute on user input. Change a number or
the value of a parameter and see what happens to your expressions and their
results.

* There are two computation window types: standard multistring document and one-
formula window have been created for your use.
* There is integration with mathematical programs that run formulas in string
view through the clipboard.
* Natural Calculator uses include documents to use their variables, units, and
functions. Define your own symbols in the document, save it, load in the settings
dialog, and use them in a new document. Or, use the supplied documents with
defined units, variables, and functions.
* There is syntax highlight.
* Complete documentation is available.

Download RapidShare