I know what it is, this is a hidden game in the Casio calculator, it was a crazy way to play it in school ten years ago, I have learned at least ten such methods, through the order of the method to achieve the calculator confusion, Glitch-like repetitive grids appear on the screen, which is really fun. Now I've forgotten all about it, it's a fond memory.
I did this in school and found another trick with similar procedure. Instead of that pattern, it fades away from brighter to dimmer until you cant see anything in the calculator. Makes you wonder how these guys discover this tricks
I don't have one of these, but I can tell you one thing. There is a hack for the fx-82ms in which you do something like this (take a minute or less though HAHAHAHAHA). THOUGH, it only works for some of them (those with an A at the back rounded by a circle). The other ones are either too old and didn't have the bug or too new because CASIO fixed this - could be the same case. EDIT: "It's not working for a new version" - a comment.
In this tender age beautifully explained. With the Good voice nicely presented Develop your skill and go forward to achieve many things God bless you mydear chellam.
I'm Just searched calculation trick WITH scientific calculator.... but i had seen your vedio and wach till end..... if i will do it what benifit i will recive.you have to tell me.