Brand:  Casio  
Model:  fx82B  
Type:  Scientific calculator  
Batteries:  AA x 2  
Lifetime: 
Introduced: 1987 Terminated: unknown 

Notes: 
The Casio fx82 series started with the Casio fx82, an ordinary scientific calculator. But But Casio
kept extending this line, turning it not into just a model number but a whole
calculator series. Trying to make it the nonprogrammable scientific
calculator for school use.
So far I've found mention of the following types:
Enhanced version of the Casio fx82A. Added features are the display modes, percentage operation, random number generation, roundoff operation, hyperbolic functions, and an "OFF"key instead of a slider.

Picture: 
©2009 Ernst Mulder