Calculation Devices for Algebra,
With Trigonometry, and Related Theories and
Techniques for Creating Calculation Devices,
Created By David@TechForText.com, ©2010
To contact the author use the above email address, or
The nine websites, with the calculation devices are listed below this paragraph, but I am presenting links to two of the most interesting online devices here. If you a click on a blue link below, a functioning calculation device will open directly from this webpage:
www.TechForText.com/PolyTrig-Calculator/P This device carries out over 30 trigonometric calculations simultaneously, when the user enters numbers for the height and base of a right triangle.
A List of Nine Websites, with Calculation Devices,
And Related Information
Websites Listed Above
Internet Explorer: http://www.microsoft.com/windows/internet-explorer/
Google Chrome: http://www.google.com/chrome/
The calculation devices that I created in the spreadsheet format require Microsoft Excel, or the OpenOffice.org software package, and the Windows operating system. If you do not have Microsoft Excel, you should download the OpenOffice.org software package, because it is free. This software package is almost as good as Microsoft Office, and it contains spreadsheet software (OpenOffice Calc) that has most of the functionality of Microsoft Excel.
Incidentally, highly complex calculation devices, involving thousands of formulas, may require a relatively powerful computer, to function optimally. However, the most complex device created for the nine websites listed above, involve less than 150 formulas.
The nine websites with calculation devices, as well as this website, were designed to maximize usability or user-friendliness. The text on all of the websites, are presented with relatively large fonts. The paragraphs are relatively short, and the sentence structure and wording were written to maximize comprehension*. The websites have a very simple layout, on a single page. The websites that have large amounts of text have a hyperlinked table of contents. This makes it easy to navigate intuitively, by scrolling down or up, or by clicking on links. All the links for downloads and other websites are also written with large fonts, and clearly marked as links, such as with the following words: left click on these words.
*Note: Most of the information on the nine websites is technical, and it requires advanced knowledge in spreadsheet software and mathematics, for maximum comprehension. Individuals, who do not have this knowledge, will probably understand portions of the text.
Services Offered by the Author David@TechForText.com
I write instructions for the devices I build. I can also write instructions for software and computer devices created by others. In addition, I can write advertising for your websites, products and services.
I can provide the services mentioned above on a fee-for-service basis, or possibly based on temporary or permanent employment. If you are interested in my services, and want additional contact information or more data on the services I offer, you can email me at David@TechForText.com or use a website communication form, by left clicking on these words.
I am located in the USA. If you are a great distance from my locality or are in another country, this is not important. I can provide these services worldwide, because the software and websites I make can be delivered through the Internet to any locality, providing there are no governmental restrictions.
For a list of all the services I offer see www.TechForText.com
For a list of all my websites see www.David100.com
My resume is online at: www.David100.com/R