the calculator home page

Casio fx-991ES Natural Display

The Casio fx-991ES Natural Display is a scientific calculator with 8 digits precision and formula input logic. It has 403 functions, 50 keys and an LCD (liquid crystal) display. The power source is Solar. The calculator was manufactured in China.

Facts at a glance:

Type Scientific
Functions 403
Keys 50
Precision 8
Logic Formula
Display type LCD
Display size
Length 161 mm
Width 80 mm
Thickness 12 mm
Weight 105 g
Power Source Solar
Country China
Original price unknown
Est. current value unknown
Year introduced 2005
Year discontinued

See other calculators manufactured by Casio.