Casio fx-991ES (Natural Display)

Casio fx-991ES
Image: Wikimedia CC BY-SA 3.0
The Casio fx-991ES 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. Note: Functionally the same as fx-570ES with solar power

Facts at a glance:

Feature Value
Type: Scientific
Functions: 403
Keys: 50
Precision: 8
Logic: Formula
Display type: LCD
Length: 161mm
Width: 80mm
Thickness: 12mm
Weight: 105g
Power Source: Solar
Country: China
Year introduced: 2005

See other calculators by Casio