It has been 27 years since the first graphing calculator – CASIO FX-7000G – was invented. Today, all new graphing calculators have color displays. Believe it or not, back to 1993, there is already a color display graphing calculator: CASIO CFX-9800G. The one I am going to review, it the CFX-9850GB Plus released in 2002.
This model comes with two colors: while and black. Mine is the white one of course. I won’t say it is a very good looking one, but absolutely not bad. It is surprising thick, even 1mm thicker than the original monochrome nspire (both without case).