|Re: HP-20B pics --- comments on Allen's and Gene's comments :-)|
Message #14 Posted by Allen on 18 July 2008, 3:14 p.m.,
in response to message #13 by Gene Wright
I first noticed this pattern when trying to find enough leather cases for my Clamshell/Voyager/Pioneer series. I chose Burgundy for the financial, Brown for high-end scientific, and Black for the others.
Type CL Spice VGER Clam Pioneer Charmne. ACO
MS 35 33e 11c 28c 20s/32s/ii - 33s/35s
HS 45 33c/34c 15c 28s 27s/42s - ??
ST - 31e/32e 10c/16c 18c 21s/22s 38g 39/40g
BF 80/70 37e/38e/38c 12c 19b/ii 10b/14b/17b/ii - 12cp/17bii+
GR - - - - - 48s/x/g/x 49g/+/50g
MS= Mid Range Scientific
HS= High-End Scientific
ST= Student (Specaility Calculator)
Functions are "generally" traceable to the previous generation in the series.
Note: It is my opinion that the Graphic Calculators really started with the 41C series. While the 42S was marketed as a 15C upgrade, many of the features were reverse compatible with 41CV programming. Likewise, the 48S functions build on the 41cv+advanced module+XMEM+Connectivity idea that started with the 42S.
There may not be a reason to build an advanced scientific model when the 35S and 50G close the gaps with memory and connectivity, but for any current HP designer who is cognizant of the Corvallis Handheld legacy, there seems to be a piece missing.
There are more subtle differences between many of the models that make them hard to fit into 5 categories.. Looking chronologically, you can find marketing materials for many of the models that show the new 'replacement' models were aimed at satisfying certain loyal users. The most obvious are the 32s and 42s whose boxes bear explicit 11c and 15c upgrade markings.