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+--- Thread: Where to get HP65 schematics? (/thread-1994.html)
Where to get HP65 schematics? - Harald - 08-19-2014 01:30 PM
I am interested in understanding the HP65 hardware a bit more. I assume display and keyboard are identical to the HP35, which is described by Jacques Laporte here.
But I can't find anything on the card reader.
I have already tried to contact Dave Colver for the schematics CD but unfortunately did not get a response.
Any ideas are much appreciated.
Regards,
Harald
RE: Where to get HP65 schematics? - SlideRule - 08-19-2014 02:03 PM
Harald
Try googling for the following:
a. us-patent-4001569
b. us-patent-4009379
for a start - Happy Hunting.
BEST!
SlideRule
RE: Where to get HP65 schematics? - Don Shepherd - 08-19-2014 05:52 PM
(08-19-2014 01:30 PM)Harald Wrote: I am interested in understanding the HP65 hardware a bit more. I assume display and keyboard are identical to the HP35, which is described by Jacques Laporte here.
But I can't find anything on the card reader.
I have already tried to contact Dave Colver for the schematics CD but unfortunately did not get a response.
Any ideas are much appreciated.
Regards,
Harald
Have you looked at HP Journal for May, 1974, volume 25 #9? That whole issue is devoted to the 65. It is on the Museum DVD or at hparchive.com.
RE: Where to get HP65 schematics? - Didier Lachieze - 08-19-2014 06:37 PM
(08-19-2014 05:52 PM)Don Shepherd Wrote: Have you looked at HP Journal for May, 1974, volume 25 #9? That whole issue is devoted to the 65. It is on the Museum DVD or at hparchive.com.
It's also available on the HP web site : hp journal : online issues.