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Calculon is a handy calculator widget that runs under Dashboard in Mac OS X. It includes a 2 line display that lets you see what you're entering to be calculated, and features a choice of 10 different face colors.

calc_silver.gif
black silver white blue green yellow orange red pink purple

Mouse over the squares to see each color.

Download

The latest version is Calculon 1.22 - released on November 25, 2007.

Click here to download Calculon!

Mac OS X 10.4 Tiger or later is required.

If you're using Safari, click the download link. When the widget download is complete, it will be automatically unarchived and the "Widget Installer" will appear asking if you want to install Calculon and open it in Dashboard. Click "Install" to open the widget in Dashboard, then click "Keep" to install it.

If you're using a browser other than Safari, click the download link. When the widget download is complete, unarchive it by double-clicking on the "calculon.zip" file. Then double click "calculon.wdgt". The "Widget Installer" will appear asking if you want to install Calculon and open it in Dashboard. Click "Install" to open the widget in Dashboard, then click "Keep" to install it.

Instructions

Calculon is easy to use, and works pretty much like a regular calculator... the biggest difference is that there are no buttons. To enter numbers, simply type what you want on your keyboard. To execute a calculation press the "=", "return" or "enter" key.

To reset Calculon press the "clear" key or "c" key.

To delete characters in your expression one at a time, press the "delete" key or left arrow key.

You can use the answer from a previous calculation in a new one. For example, suppose you have:
2+2=4

Now type "+6=", and you'll get:
4+6=10

You can also enter extended calculations, including the use of parentheses, such as:
(3+3)*3=18

(note that Calculon uses operator precedence, so multiplication and division are calculated before addition and subtraction. Calculon does not currently support more advanced things like trigonometry functions... although that may be something I'll consider adding in the future.)

In order to support certain keyboard number pads, pressing the "," key enters a "." into the calculator as the decimal point.

Calculon also supports copying and pasting of data. "Command - c" will copy your answer to the clipboard. "Command - v" will paste data from the clipboard to the expression part of the LCD display.


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