Computer museum and calculator museum on both you find ? lot of info.
In most cases the printer platen and cardreader neef to be fixend. CPU is build out of 4
TTL-boards in both machines memory and rom differs.
You sjoels check the psu boards begier switch on.
m.vr.gr. Rik Bos
Op 16 mei 2012 om 12:58 heeft Chris Pye <pye at mactec.com.au> het volgende
I was dropping off some rubbish today at the local
council dump, and noticed an old HP machine in the trailer next to me. I didn't even
say anything, I just stopped and stared at it and the guy asked if I wanted it. When I
said yeah, he replied with "shame you weren't a few minutes earlier, I just
chucked two others in the recycling bin and all the manuals and tapes/cards are in the
Turned out to be an HP 9820A, and I managed to get the other 9820A and a 9810A out of the
recycling bin without anyone noticing. Unfortunately couldn't retrieve anything
Just wondering if there is anything in particular to watch out for when powering up one
of these for the first time other than normal power supply checks?
I (obviously) don't know much about these machines at all, but I'm particularly
mystified about how the built in card reader worked (is it magnetic?).. Could it be
written to as well?