RPL second impressions (HP 28)

[John Keith]

(06-27-2018 03:04 AM)Steve Simpkin Wrote:  I had been using RPN for about 11 years (HP-25 and HP-11C) when I bought my HP-28C in 1988. I loved reading the manuals and became an instant RPL convert. I thought they were really well written.

My case is similar. My first HP calculator was the 15C, followed by the 16C and then the 71B with Forth/Assembler and Math ROMs. I was also an admirer of LISP but my only experience with it was "toy" versions on a PC clone. Needless to say I was very impressed with the HP28 and I used mine until it wore out! Nowadays however I'm so used to the HP50 that I find the RPL of the 28 to be frustratingly limiting.

To the OP, I would also suggest looking at the many programs posted on this site and on hpcalc.org. Having working programs as examples can be very helpful in learning a new language.

John