Casio fx-86DE PLUS
The Casio fx-86DE PLUS is a graphing calculator with formula input logic. It has 358 functions, 50 keys, and an LCD (liquid crystal) display.
Facts at a glance:
If you have a Casio fx-86DE PLUS that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: