Seeking a timeline of feature introductions by HP

[EdS2]

Thanks everyone.

Yes indeed, I was originally thinking of a list of HP's first introductions of a given feature, but it is interesting to see where they missed out on being first.

For firsts since 2002, I think I can find firsts for these:

First Sunplus 6502-based (2003, HP 12C Platinum)
First field-upgradable, first repurposable (2008, HP 20b)
First ARM based (2008, HP 20b or 12C+)
First limited edition , first anniversary model by popular demand, (2011, HP 15c Limited Edition)
First touchscreen, app store, exam mode (2013, HP Prime)

I'm not sure about the HP 35s - any ideas for HP firsts here?
(2007, HP 35s)


Ref: HP 12C models thread https://www.hpmuseum.org/forum/thread-5180.html