Greatest Calculator Ever? - Casio FX-991ES PLUS C Features & Teardown

Hello! Today, I will be doing an indepth review of the Casio FX-991ES PLUS C, showing you the best that this calculator has to offer! It is a great calculator, offering dozens of amazing features, as well as being extremely affordable for everyone!
I didn't go too much in-depth on the last 3 modes of the calculator, but you can find an official user guide for the Casio fx-991ES PLUS C here:
support.casio.com/storage/en/...
This is NOT a sponsored video.
Buy the calculator here:
www.amazon.ca/CASIO-Scientifi...
Buy the LR44 coin cell batteries here:
www.amazon.ca/Energizer-LR44-...
Timestamps:
0:00 Intro
2:23 Functions
4:33 Prime Factorization
5:58 Division with Remainder
6:35 CALC
7:27 SOLVE
9:36 Complex Mode
11:19 Statistics Mode
13:40 Base-n Mode
14:47 Equation Mode
19:00 Matrix Mode
20:42 Table Mode
22:15 Vector Mode
23:22 Inequality Mode
23:43 Verification Mode
24:21 Distribution Mode
24:48 Constants
26:22 Unit Conversion
27:31 Solar Panel & Battery Teardown
30:40 Teardown & PCB Analysis

[@mariokirby64]

Oh hell yeah finally a review for the Casio fx 991 es plus C I searched so hard for this thanks firetto very epic

[@firettoYT]

You're welcome!

[@user-lh4eg5jo3j]

@@firettoYT you ,too!

[@Centar1964]

I agree best non-programmable calc ever...would be perfect except for the auto power off and it's power off loss of memory. They upgraded the case and buttons now in the 2nd version...looks better too.

[@ryanzhang1619]

I have this calculator! Very useful!
Edit: I have the dx-300ES PLUS not the C at the end

[@younesd.2648]

Hey I really need help, I dont know how to use the blue buttons like DEC HEX BIN and OCT

[@questy4tw]

Does anyone know what kind of chip this calculator has? Is it microcontroller?

[@nurulsabri4729]

i followed until 17:26, the calculator only gives x1 and x2 value. There are no x/y value minimum after i press the down arrow..May i know, what's the cause of it?

[@firettoYT]

Do you have the same model of calculator?

[@ravipal6774]

Hii , I have a doubt that in 991 es plus calci has two way power what is it means 2 way power which a small screen is given in the right hand corner

[@firettoYT]

I'm pretty sure the "two-way power" refers to the fact that the calculator is primarily powered by a battery cell, as well as by the solar panel in the top right corner that you are mentioning. The benefit of this is that if the battery dies, the calculator will remain usable due to power coming in from the solar panel.

[@1208yabz]

How many functions are there in this calculator?

[@pandacrafts5780]

Exactly 417 functions

[@masterfusion9811]

Please come back to Surviv.io Miss it

[@TheCrimsonX02]

is this calculator programmable? (can I use it for an exam)

[@hexonedits9252]

yeah u can use it for exams idk if u can program it tho

[@pandacrafts5780]

Its totally non program able

[@Iloverapingwomen]

Why the hell CASIO made calculator different for Canadians, no hate but now my calculator don't have those extra functions that C version has.

[@Ninjarlos]

I used to have that calculator

[@dogetto1559]

same, bro

[@novafood4068]

First

[@josephkim9382]

First one here

[@dogetto1559]

czcams.com/video/BLUkgRAy_Vo/video.html

[@josephkim9382]

Ha you got me

[@dogetto1559]

@@josephkim9382 lol

[@jamal7100]

what happened to the surviv.io videos?

[@dogetto1559]

This is surviv wym

[@jamal7100]

​@@dogetto1559 bruh i forgot f in the chat

[@Oladelwenas]

Xd

[@pandacrafts5780]

I bought it in 1000 pakistani Rupees and still think its expensive 😅🙄

[@darkfrost6393]

lol

[@pipstan4148]

firetto,you missed many great new events in surviv.io ! And now I’m already better than you. So, please make surviv.io videos !!

[@dogetto1559]

Leave him alone. He currently is focusing on this.

[@brianchou8686]

WHY NOT DO SURVIV.IO
:C sad