Selected by Scientific American as a winner of the 2003 Sci/Tech Web Awards.
This website will be offline from noon Aug. 20 to noon Aug. 21, 2015 due to a scheduled power outage.
Updated: Sun 06 Apr 2014 03:54:28 PM EDT
Before you email me, please take a moment to read this list of answers to questions I'm asked most often. (And yes, you have my permission to link to this site.)
Just a small sampling of email I have had the pleasure to receive.
In existence since 1995, this site has collected a few awards and the Java applet appeared in several books and magazines.
The collected contributions of very many people made this site possible.
Sorted list of accesses over the period of a year, shows the popularity of individual abacus pages.
Would you consider translating one or more of these pages to Español, Français, Português, Italiano, Deutsch?