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HP-65 collection
06-25-2014, 12:28 AM
Post: #4
RE: HP-65 collection
(06-24-2014 10:29 PM)rprosperi Wrote:  
(06-24-2014 02:47 PM)Don Shepherd Wrote:  For programmable handheld calculators, this was the first.

1974 was a great year. I got married, got my MA degree, got my first professional job, and the HP-65 was born.

collection

Nice photo of a nice collection; thanks for posting. The little plastic card holders seem to be rare these days, nice to see you still have the properly color-coordinated ones for each applications pac.

Does it still read/write cards?

Thanks, Bob.

I actually acquired this HP-65 about 7 years ago. The previous owner had done the card reader rebuild. The reader initially worked fine, but it stopped working about a year after I got it. However, it was still under warranty from the guy who did the upgrade, and he honored that and fixed it for free, and it has worked fine ever since.

I must have placed the standard pac near a magnet at some point, and all those cards became unreadable. A forum member told me how to cut the corner on an existing blank card and use that to fake the copy-protection circuit and re-create the standard pac programs on the original cards, and that worked fine also. This forum is truly great.

Over the years I have written a few dozen HP-65 programs, and filing and storing them has always been a problem, so recently I acquired these card holders and they work great. I think they were actually designed for HP-41 cards, but they work fine for my 65 cards too.
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Messages In This Thread
HP-65 collection - Don Shepherd - 06-24-2014, 02:47 PM
RE: HP-65 collection - Didier Lachieze - 06-24-2014, 03:50 PM
RE: HP-65 collection - rprosperi - 06-24-2014, 10:29 PM
RE: HP-65 collection - Don Shepherd - 06-25-2014 12:28 AM
RE: HP-65 collection - rprosperi - 06-25-2014, 01:59 AM
RE: HP-65 collection - Don Shepherd - 06-25-2014, 02:08 AM
RE: HP-65 collection - rprosperi - 06-25-2014, 12:34 PM
RE: HP-65 collection - Jake Schwartz - 07-01-2014, 09:56 PM
RE: HP-65 collection - CosmicTruth - 06-25-2014, 12:46 AM
RE: HP-65 collection - Don Shepherd - 06-25-2014, 01:36 AM
RE: HP-65 collection - walter b - 06-25-2014, 08:12 AM
RE: HP-65 collection - Don Shepherd - 06-25-2014, 10:40 AM



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