"Cliff" wrote in message
...
Anybody know of a good one that can be downloaded?
One might hope for one with memory that keeps and is
programmable as well.

There should be many that run on PCs .... but probably
many bad ones & a great many hits for any searches ...

Thanks
--
Cliff

When I was learning how to code perl there was a programming example on a
web page that was a hewlet packerd RPN clone. It used a web page for the
display interface, and it worked perfect. Try to find that by searching
google???