Recall Arithmetic: The haves and have-nots

[Dwight Sturrock]

I never noticed the 34C or 15C recall arithmetic until I started using the 42S and started writing really long or complex programs. I was surprised a few years back when I discovered the 15C has it.

It really is the icing on the cake for RPN. And it's hard to do without it once you begin to use it. What's strange is the 15C has it, 41C doesn't, and the 42S does.