Re: FX 502-P
Extracting from (dusty) archives...
YES! Dick Pountain - the man who published my first "real" program and fed my ego :) I think he offered me seventy quid for the accompanying article, achieved by sticking a cheque for the same in with the letter that asked me if I minded if he published, and as I recall the issue in which it was published arrived the same day in the mail.
The program was a version of Tic-Tac-Toe for the Casio fx502P and Dick seemed to think it was worth examining the code (he made nice comments, which fed my ego even more :)). I've long since lost the issue of PCW (rest in peace) in which it appeared but it was a treasured relic for many years. If I could find a scan of the article online that would be great - I could show my wife what I've been boasting about all these years :) - but it still eludes me.
Truth be told, what got me started in my ongoing addiction to programming was the Sinclair Cambridge. An hour after I bought it (at Boots, in Oxford, I think), while I was buried deep in the manual the bus I was riding was hit head-on by a truck carrying 12 tons of road gravel - one way to have a baptism of fire, so to speak. Some programmers are born, some are made, some have it hammered into them at 50 mph.
I owned or used at work some of the great machines discussed here - Sinclair Cambridge and a couple of other models whose manufacturers' names I can't recall, Casios 201p, 502p, and 702p; an HP 97c (the one with the programmable strips and inbuilt printer and that wonderful RPN that confused an entire department at the University of Oxford but yours truly cracked it :)) and a bunch of others after that (again, memory fails me) until I transitioned into "home computers" - a whole other saga :)
But, all hail Dick Pountain. Also Paul Liptrot for different reasons, and Wendy Wilson/Hunter and Trevor Hood at what was Castle House Publishing, for even more different reasons. One of these days I'll raise a monument to them all (and the countless others who helped me become what I am today - ..er.. - homeless and unemployed in Los Angeles. But still addicted to programming :)).