On 2012 Mar 5, at 9:31 PM, David Griffith wrote:
Does anyone here collect HP calculators?
I collect calculators in general, so inevitably have a few HPs.
21 (purchased new in 1976)
38C
9815
AFAIK that was the only RPN desktop calcualtor (the earlier 900 and 9810
machiens are sort-of stack based but IMHO since they lack auytomatic push
and pop, they;'re not really RPN). It's also the only HP calculator
(before the HP9000/200 seires) that used a standard CPU chip (there's a
6800 in there).
9825 (*2)
I'm kind of surprised I haven't run across more of the pocket calcs
over the years.
Most models are not rare, but there are quite a number of people who like
them, so they can sell for failry high prices.
-tony