This is a small collection of simple single purpose calculators that I've used for electronic design. Each calculator does one specific calculation and conversion. If you are looking for a super conversion calculator that can do cubits to angstroms, search for "versaverter" with your favorite search engine. These calculators are not burdened with a lot of whizzy features and they don't take up much screen space.

The calculators work by actively watching the blanks and recalculating if possible whenever any of the fields are updated. There are no calculate or enter keys. Some calculators permit units to follow numbers and it will be documented with each calculator. The calculators can have the results selected and copied into the clipboard.

The calculators are provide in Tcl/Tk source code. Tcl/Tk, is an open source environment and binaries/source code for most operating systems can be obtained from ActiveState. On a Windows machine, once the Tcl/Tk environment is installed, double click on the calculator to launch it. On Linux, use command line: wish <calc filename>.tcl.

As the calculators are provided as plain text source code and are licensed under GPL ( GNU General Public License).