Graphing Calculator Innovations Message #1 Posted by Eddie W. Shore on 10 Mar 2010, 10:51 p.m.
(I'm not sure I have this 100% right, but here it goes):
First Graphing Calculator: Casio 7000G in 1985
First Foldable/Clamshell Calculator: HP 28S. There is one on the market today, Casio fx9860 Slim.
First one with Natural Input: HP 48S
First one with a Stylus: Casio Classpad 300
First one with a Touchpad: TI nSpire Touchpad
First one with "documents": I want to say the HP 38G/39G; I think that was slightly before Casio came out with their eactivity.
First one with external backup: HP 48S
First one I ever owned: TI 81 back in 1991  I was in high school. The first HP graphing calculator I owned was the HP 48G in 2000. The first Casio graphing calculator I owned was the fxAlgebra 2 (I think it was 2004).
