HP 9820A


Just curious, but how big interest is there in the HP 9820A calculator? I have plans to sell it, maybe on eBay.


What shape it is in?


Hi Conny

Very interesting. I see that you reside in Sweden. I'm living in Denmark. So I might be interested.

Best regards

Johnny Bjørn Rasmussen

Lemvig, Denmark


I'm also interested, pending more information.


The calculator is in near mint condition. I would like to say mint, but it has been used. The electronics is also old, so there is no guarantee that the electronics will last for a long time if the plan is to use it.

I have tested the electronics using the electrical test programs and all seems in good condition.

It has been stored in normal room conditions, that is around +20 degrees C. No smoking or other contaminations.

I will post some photos later.


Link to photos here.


Beautifully perserved 9820, Conny. Looks like a great collector's piece. More on the history of this machine's development here: HP 9810/20/30

Edited: 25 Sept 2010, 3:34 p.m.


The link is not working for me.


Sorry Tim, it works for me in both IE and FireFox.



Working now for me as well. The site must have been down temporarily.

The calculator is indeed in beautiful condition. The OP should have no trouble finding it a new home--preferably mine. ;)



That is indeed a beauty! I can offer a very caring and clean home for it :) Good luck with the auction. Good luck to the eventual winner too!

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