Well, actually, it has been released for some time now; but I’m planning on getting a few articles up and I want the order right. According to the server timestamps, it has been up since 13 March 2012.

The emulator looks like:

You can click the display to call up some additional options. The most important of these is “Help”.

You can find out more about the calculator and the latest range of emulators on the HP-21 topic page.

It's only fair to share...