The Museum of HP Calculators

HP Forum Archive 08

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A revised family tree
Message #1 Posted by jose goncalves on 25 Aug 2002, 4:30 p.m.

I developed a familiy tree for the machines and I would like to share the idea with our friends in The Museum. The diagram was prepared based on the one available in Craig Finseth's site with added information taken from The Journal and other sources. There is a lot of personal opinion, like the idea that the whole thing started with the HP-35 model. You can see it at:

http://www.hpmuseum.org/guest/goncalv/hptree.pdf

As for the "instantaneous" development suggested by the vertical lines, they are mostly due to HP company information that some models were released in the first months of a certain year while some other models were available only later in the same year. They also represent models that belong in the same group of development, as far as the available information is concerned.

Anyway, I think the diagram shows very clearly the impetus that once drove HP company which is one of the reasons why we are so deeply involved with their products. Hence the big title I gave the diagram.

I'm trying to improve the vertical dimension as to make the diagram more complete and easy to understand.

      
Re: A revised family tree
Message #2 Posted by Raymond Hellstern on 26 Aug 2002, 4:29 a.m.,
in response to message #1 by jose goncalves

Nice work!

Hmm. Since you included the 9815, which is hardly a handheld device, wouldn't it be more complete to include the 9100 series, too?

And on the right end of the line, there are the 'FHB' models missing, since you included the 10BII;-)

But of course the title 'Real roaring 20's' says it all. From this aspect you're perfectly right.

Raymond

      
Re: A revised family tree
Message #3 Posted by Victor on 26 Aug 2002, 1:59 p.m.,
in response to message #1 by jose goncalves

I noticed there is a "32C" in the diagram. I don't think there ever was an HP-32C. Or is this an unreleased prototype?

      
Re: A revised family tree
Message #4 Posted by Ellis Easley on 26 Aug 2002, 5:16 p.m.,
in response to message #1 by jose goncalves

This is great! I have one question: how does the 16C contribute or lead to the 28C?


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