## Software calculators

There are several software packages in different languages that enable braille pupils to use a scientific calculator on their computer.

**1) ALLERCALC (English)**

Allercalc is a scientific calculator which is compatible with most screen readers and permits speech and braille output. It works with keyboard input, and it's possible to copy-paste from and to Word documents. Visually impaired pupils who wish to read the interface, can adjust the colors of the buttons.

Allercalc is freeware, and you can download it via the following link: http://allercalc.en.softonic.com/

**2) EXCEL (All languages)**

Excel is a spreadsheet, and compatible with all screenreaders. It can easily be used as a calculator for the blind student, and is highly recomended to do so. For simple calculations the student can use one cell. To do calculations write = (equal-sign) first, then the expression you would calculate, and press the enter-key.

Some usefull shortcut-keys in Excel (.doc)

There is also some premade Exceltemplates to download:

Trigonometric calculations (.xls)

**3) TERMEVALUATOR (German)**

Termevaluator is a scientific calculator made for blind pupils. It's compatible with most screen readers and permits speech and braille output. It works with keyboard input and the code is LiTeX, a simplified version of LaTeX. It has three overlays: calculator, solving equations and graphs. The produced graphs are printable on swell paper or with a Tiger embosser. You can adjust the line thickness.

Termevaluator is freeware, and you can download it via the following link:

http://www.werner-liese.de/20801.html

More information on the code via: http://www.augenbit.de/wiki/images/0/03/Latex-fibs.pdf

**4) ****CALSCI (French)**

Calsci is a scientific calculator offering all possible functions. It is compatible with most screen readers and permits braille output. You need a braille display to use it, because not everything is supported by speech.

Calsci is freeware, and you can download it via the following link:

http://www.winaide.net/article32.html