advantages of RPN

[Matt Agajanian]

While we're on the subject, (RPN of course), I found a very helpful iPhone app that makes for quite a good tutorial and understanding of RPN if one was ever to teach others about RPN. It's called 'Active RPN.'

What makes this app so helpful;

T, Z, Y and X are always visible and in top-to-botttom order so users can see stack behaviour
Last X is also visible and, unique to this app, Last Y is shown, retained and can be recalled.
An ongoing trace mode and page are available.

Here's the webage link:

http://www.math3g.com/Site/RPN_Progs.html

Here's the iPhone app link:

https://itunes.apple.com/us/app/active-r...47341?mt=8