International Chemistry Olympiad - IChO - For the competition purposes, all the competitors will be given a calculator Casio fx-991EX. The manual for the calculator can be downloaded from the following link:
CASIO FX-991EX QUICK START MANUAL Pdf Download | ManualsLib
Getting Started with Casio Classwiz FX-991EX FX-87DEX FX-570EX Calculator - YouTube
BRANDNEW] ORIGINAL CASIO FX-991EX CALCULATOR COMPLETE WITH BOX AND MANUAL, Mobile Phones & Gadgets, Mobile & Gadget Accessories, Cases & Sleeves on Carousell
How to change the Brightness and Contrast Settings on Casio Classwiz fx- 991EX Calculator - YouTube
Casio FX-991ES Plus user manual (English - 46 pages)
Standard: Casio FX 991 DE X ClassWiz scientific calculator + WYNGS protective bag light grey + CALCUSO manual + extended CALCUSO warranty : Amazon.com.be: Office Products
User's Guide to CASIO Calculator (PH) - YouTube
Casio Graphic Calculator FX-991EX-S-UH - Hunt Office UK
Casio fx-991EX classWiz user manual and commands. | PDF