HP tape drive PCBs

[Tony Duell]

> 
> I note that HP is now recycling its model numbers (I suppose that 
> there weren't enough numbers and letters left).  The HP 7970 is also 
> the model number of a Pavillion desktop PeeCee.

A feww years ago I was saddened to learn than an HP9100C was some kind of 
printer/scanner thingy, and nothing to do with the 9100A/9100B 
calculators (which as I've said before are the most elegant pieces of 
electronicvs I've ever had the pleasure to work on).

THinking about it there were _5_ calculaotrs all claiming to be a model 10...

HP9810 (aka Model 10 calculator) -- a 3 level stack RPN desktop machine
HP10 (aka HP10A) -- a printing adding machine
HP10C -- simple scientific programmable in the 'Voyager' sereis
HP10B -- Algebraic-notation bussiness calculator
HP10B-II -- improved version of the last.

-tony