Download a Demo version of the GeigerGraph software from this page.  The demo is designed to simulate the recording and graphing of radiation counts in the instance where you have no compatible Geiger counter plugged into your computer to produce "real" pulses. We suggest that you run this Demo program at least 15 minutes, the first 7 minutes of which demonstrate GeigerGraph's operation under typical background radiation, then followed by an alertable and elevated radiation count from a theoretical radioactive "event".  Please keep in mind that not all features of the standard program will necessarily be functional on the Demo program.

To download, click on one of the bright yellow links below, depending on which version of GeigerGraph you want.  You will be saving to your disk a self-extracting zip file, named GeigerGraphDemo.exe or GeigerNetDemo.exe, respectively.  After downloading, simply double-click on that file.  It will automatically install the program to your hard drive and give you an opportunity to launch the program file at the end of installation. Or, you can later run the program from the desktop shortcut created upon installation, or by opening the file called GeigerGraph.exe from within the default directory of C:\GeigerGraph Demo or C:\GeigerGraph Net Demo, respectively, or from within any alternative directory you may have specified during installation.  Now click on the link(s) below to download a Free Demo (you may want to print these instructions to refer to later):

GeigerGraph Standard Version - 1.5 MB - 1 to 8 minutes download time

GeigerGraph for Networks - 9.9 MB - 6 to 45 minutes download time