PRC declared that using 991ES and 991ES PLUS Casio calculators are prohibited.
As I enter college from algebra 1 to Engineering economy I always use 991ES PLUS as my weapon in every exam. My day to day life depend on it from budgeting to liquidations of my expenses. I try to explore the different modes and keys of my calculator in order to formulate shortcuts in solving problems but right now the news is heart breaking and I lost 1/8 of my confidence.
Keep on fighting! 
Remember! what you become right now is what you strive before.
THANK YOU
You made an amazing content my dear friend. We sould connect and support each other by follow each other. I already upvoted you and following you, please think about that.Thanks and greeting from @chanthasam
thank you, struggles are for real
I feeeel you. The moment I heard the news, I was shocked because Casio 991Es is the only calculator I used in my five years in engineering school. Good thing Casio570Es saves everything. It has the same features of Casio 991Es but the 570 has no solar power. 💗
luh, still it is heartbreaking 570 is time consuming. The memo also includes 1calculator policy no reserved calcu .