Hi
Just thought I would say hi as a new member. I have always had an interest in programmable calculators since I saw and purchased the Commodore PR100 back in the 1970s when I was 16, which I still have and which still works:-)
I have got myself re-interested in such 'beasts' by virture of a virtual HP 41 CX, (sorry its not the real thing),courtesy of the Itouch and the excellent ic41cx+. Have started reading about the history, the various user clubs and also started to delve into various books like Extend your HP41, synthetic progamming etc. All very satisfying.
I haven't quite understood the point of synthetic programming but assume it was an excuse for people to 'hack' into the HP41 , as well as the fact that it saved progamming memory and enabled additional functionality - but it does seems pretty complex to achieve all of that.
In trying to find a manual online for the CCD module, I came across this link to a manual for :Intelligence Aid for Evaluating Enemy Courses of Action (ENCOA): Guide for Manual and HP41-C/HP41-CV Calculator Procedures". Its a shame that the manual itself isnt available and but it shows the extent of the usage of the HP 41 in its heyday, which I thought might interest you.
Also came across a current add on Ebay with a proce of Euro 600 for new HP41 cassette tapes !! Now that does seem a bit over the top.
cheers
Nigel