What are some interesting facts about everyday objects or concepts that most people don't notice?

 Have you ever noticed this on your Casio Scientific calculator ?

The area above display encircled by red color reads S-V.P.A.M .

S-V.P.A.M stands for Super Visual Perfect Algebraic method. Many scientific calculator models from Casio like fx-82MS, fx-90ES etc. come under S-V.P.A.M range.

S-V.P.A.M indicates that the calculator supports direct algebraic input and processing. For example, if we want to calculate $2^3+3^3$ so we can directly input this in Casio’s S-V.P.A.M calculators unlike other simple calculators where you manually have to calculate $2^3$ and $3^3$ and then add them. Not only that, we can permanently store numbers or answers in variables A, B, M etc. provided and use the variables instead of writing the whole number. For e.g. if variable A stores $2^3$ and B stores $3^3$ then we can write $A\times B$ in the calculator instead of $2^3\times 3^3$. The answer will be same. These are the features of S-V.P.A.M models.

Image source: My phone.

Calculator model shown: fx-82MS

EDIT: Asked in comments commonly, so writing it here.

How to store numbers in calculator?

I consider you are using fx-82MS.

Consider you did a calculation, say $24.3/56$ .

Now to store this answer in variable ‘A’ press

SHIFT + RCL(STO) +  A 

SHIFT is present in the top left. Press that. Now RCL(STO) button is present in the left end just 3 buttons below shift vertically. Press this and then above RCL(STO) button you will find buttons like (-), degree, hyp etc. These buttons have inscribed A, B, C on upper side. Press any button which has those variables of your selection. The answer will be permanently store and will look like this.

So, variable A has answer stored which you can use anytime and won’t have to calculate always. To get the value from a variable press “ALPHA” button which is next to “SHIFT” and the variable.

For example: ALPHA + A and press equal to 

So it will give value in A. You can make any math operation on A now. Like to multiply the value in A by 2 you can write “2A” by pressing

2+ALPHA+A+'=' 
 where A is "(-)" button. 

to get the value

P.S. These values are permanently stored in the variables until you store “0” i.e, clear the data in them. So, definitely you can store your important password or mathematical/physical constant values for exams without letting anyone know :p .

EDIT 2: Thanks Vinita Jagannathan and Audhithya S V (ஆதித்யா ஸ்ரீ வெ) for suggesting edit.

EDIT 3: Arpit Mishra (ଅର୍ପିତ ମିଶ୍ର) shared a very good piece of information by which one can store upto 80 numbers in CASIO scientific calculator (each upto 10 Digits). So, I am adding it here.

Assuming fx-82MS, just go to SD mode from mode button by pressing MODE+2 .

Now start calculation and after getting the answer, press M+ (add to memory) each time after calculation and clear the display and continue doing calculation pressing M+ each time getting answer.

In this way you can store upto 80 answers at a time and retrieve each of them pressing replay button up/down. This works even you put off the calculator.

Note that this works only in SD mode. If you change mode, all data from stack will get cleared off.

You can perform operations like sum of all numbers, sum of square of numbers or any statistical calculation by pressing SHIFT+1 or SHIFT+2 i.e, S-SUM/S-VAR button.