## Contents

- Introduction
- Features
- Usage
- System requirements
- Demo
- Download
- Support

## Introduction

Voynex JavaScript calculator is a browser application designed to evaluate mathematical expressions.
The main difference of Voynex Calculator from other calculators:
it is possible to enter the whole expression at once instead of entering it step
by step. For example Voynex Calculator can evaluate expressions like this:

sin(sqrt(PI/3)+sqrt(PI/5))+cos(PI/2+1)
x=pow(4,5)+3; 3*x+log(x)
0xff07+0x1c04*(0x45+0x55>>1)

Voynex Calculator can evaluate JavaScript expressions
of any complexity. Wide set of mathematical functions allows to calculate
trigonometrical, logarithmic and other math expressions.

Desktop version gives you a powerful calculator superseding standard Windows Calculator.

## Features

- Mathematical Functions
- Trigonometric - sin, cos, tan, asin, acos, atan
- Logarithmic - log, lg, ln, 10
^{x}, e^{x}
- Power - x
^{2}, x^{3}, y^{x}, square root
- Factorial
- Random number

- Numeric systems
- Hexadecimal numbers
- Octal numbers
- Conversion between numeric systems

- Statistics Calculator
- Number of values
- Minimum
- Maximum
- Range
- Sum

## Usage

This section explains how to use Voynex Calculator.

The user interface of the calculator consists of input area,
result output, control panel, arithmetic and math panels.

Arithmetic panel contains buttons with digits and arithmetic
operations. Math panel is used to enter trigonometric,
logarithmic and other mathematical functions.
Arithmetic and mathematical panels can be turned
on/off by clicking the corresponding check box on the control
panel.

To enter expression type the numbers, arithmetic symbols, JavaScript functions
on your keyboard or click the corresponding buttons on the
Arithmetic panel.

Press <Enter> or click "EVAL" button to calculate expression.

When new expression is calculated, the result of the last one
cleared from the display automatically.

It is possible to input multiline expressions.
Press <Ctrl+Enter> to enter the new line.

## System Requirements

Online and desktop implementations of Voynex Calculator use JavaScript,
so it cannot run if your browser has JavaScript disabled, or in the unlikely
case that your browser does not support JavaScript.

## Demo

Open online version of Voynex Calculator. View screen-shot of the downloadable desktop version.

Online calculator is designed to run directly in your browser,
without the need to download software to your PC. The online version is
useful if you are not able or do not wish to download and install any
software.

## Download

Voynex calculator is available at no cost and delivered as Open Source software.
Free for non-commercial use.

Voynex Calculator is designed for everyday use. It is implemented in the form of the HTML Application
(HTA) and shipped as zip archive or self-installable package.
Archive can be used if you do not want to install any software on your computer.
Just extract archive content and run .hta or .html file.
Installer creates calculator's shortcut on the Windows
desktop and entry in the Start/Programs Menu.

Download PAD file of Voynex Calculator.

Changes, bug fixes and versions history of Voynex Calculator are recorded in
changelog.

## Support

Please contact our support if you have any
questions or suggestions.