I don't know if any of you have seen this, but it's extremely cool: http://nonpareil.brouhaha.com/ It's a program (for Linux) that emulates a lot of HP calculators, including the 11C (my favorite), 12C, 15C, and more. Screenshot of it in HP-11C mode on my Fedora system: http://home.comcast.net/~micorral/hp11c.png I love it! :) Michael