Ever been stuck somewhere (Waiting room, waiting on food, math class) and only had a calculator to play with? It happens to me all the time.

At first you may type out some stuff like 99999 X 1.0012874, but stuff like that gets boring very quickly.
Then you may begin to spell stuff like hEllO, but you run out of things to do after that.

I'll do my best to show you how to do some various things on a calculator.

## Step 1: My Calculator

My main calculator is a CASIO fx-300MS. They are common (Got mine at Walmart for \$10) and have quite a few functions, but are cheap and are usually allowed to be used in the classroom because they are not graphing calculators.

As you can see, mine is beaten and mistreated, bestickered and drawn on, but it still keeps going.

Sorry about the terrible pictures, using the flash made it over-exposed looking, but not using it makes it look fuzzy.

## Step 2: The Basics

We probably all know that a calculator can be used for writing certain words.

Many of you have typed 0.1134 into a calculator to get "hEllo".

Pretty much any word with I, S, L, Z, E, O, B, G, and H can be spelled.
This gives many more possibilities than you might expect. Did you know that Eloise can be spelled,
and so can "hobo" and so can "BIOS" (If you're a geek).

I found This site, which has tons of words you can spell on a calculator.

Some calculators have some special letters. Mine has the letters A-F, plus X, Y, and M. I found out that I could get a "P" by pressing shift+nCr. Pi (the symbol) can be substituted for "n".

Though remember, doing math on a calculator can still be fun...

## Step 3: Press the Buttons

If you have a slightly more advanced calculator, like mine, lots of fun can be had just pressing buttons to see what they do. That's what they're there for.
It was an entire year after I had gotten my calculator that I found the Ran# function, which generates a random number between 1 and 0. Plenty of fun can be made from this button, which I'll get to later.
I STILL occasionally find new things on this simple calculator.

## Step 4: Make Up Games

You can make up simple games for a calculator.

1:Guess a number
I like to key in "Ran# x 10 + 1"

That gives me a random number between 1 and 10, including 10. I then try to guess the number that will come up next.

2:Memory
Key in 6 random two digit numbers, and then cover them up so that you can't see them.
Try to remember all of them. It's extremely difficult because the brain can only easily remember 5 numbers at a time. Check your guess.

3:Pi attack
Type out pi as best you can. Press enter and then press the pi button and then enter. Did your answer change? Did you mess up or did you BEAT the calculator? (I already know pi to 21 digits, so I beat it every time.)

4:High score
This one can be done on most calculators.
Type 1, and then press equals. type +1 and press equals as many times as you can. See how high you can get the number to go. In a half hour you can get 5,000 or more.

## Step 5: Push the Boundries

Us on Instructables know that the best use of an object is the one it's not designed for.

I like to push calculators to their limits. Some ideas:

Do arithmetic on system messages. I've heard that on some calculators you can do arithmetic on system messages like ErrOr to get things you couldn't make usually. Try using the memory recall just after you turn your calculator on. I've heard that you can get some values from the "boot up" of the calculator. This would give you weird symbols and letters unavailable elsehow. I've never gotten this to work on all of the two calculators I've tried it on. I can put letters and numbers to either side of the message, but never inside it, and I can't change it in any way.

Check the accuracy. I don't know how. You'll have to find out on your own.

Hit it. I don't recommend this on anything you care about. Try hitting the calculator against something until the screen shows all eights or something.

Touch the screen. This one is the easiest. Turn the calculator on and press firmly on the LCD screen. All sorts of pretty colors and lines will appear. Contrary to what some of you might say, I have never had a calculator break or have the screen be damaged by this.

Find the screen checker Soobs told me about this one! On some calculators it is possible to go into a screen testing mode that they use at the factory. My Casioo will do it if I press shift, 7, and on
ALL AT THE SAME TIME. After that keep pressing shift to cycle through them all.

## Step 6: A Final and Unavoidable Use

Hitting people. Not hitting to damage, just a quick painful tap on the head.

1-Select victim (someone you don't know)
2-grasp the bottom half of the calculator firmly between the thumb and index finger, as in holding a pencil, not picking up a coin.
4-Using only the wrist tap your victim (hard)on the head with the top corner of the calculator.
5-RUN

## Step 7: The End

That was my first instructable. Constructive criticism welcome.
That calculator has saved my life from death by boredom. Give me a calculator and I'll never be bored.
<p>This site is awesome. Now I won't be bored out of my mind when I have my calculator with me.</p>
<p>So when we clicked on &quot;this site&quot; it is no longer. It needs to be translated, and the games or word setup for the calculator is not there.</p>
To use the lowercase r you have to set your calculator to REG mode. Press &quot;Mode&quot; then &quot;3&quot; and finally select any that you want (I use &quot;Lin&quot; becouse it is the number 1 and is more on hand) Then you press &quot;Shift&quot; and &quot;2&quot; you go sideways and you find &quot;a&quot; &quot;b&quot; and &quot;r&quot;. You also have a &quot;n&quot; letter on &quot;shift&quot; &quot;1&quot;.
the first ever word i knew in calculator is: <br>A girl wears 69 bra. She thinks it's 222 much. So she went to 51 street and she met doctor X and after 8 months of operations she ends up(press = and invert the calculator)
I know this ible is old, but I have another game:<br>In my maths book from previous year, I and the person who was next to me, found an monopoly bord in an photo in the book. I took my calculator, he some paper houses, and set ran# to 6, with full numbers (1, 2 etc, not 1.1243) and we played monopoly
Pretty stupid, but for those calculators without the 'off' button, if you press 2,3, and on at the same time or 5,6, and on.. it'll turn off! Woah, didn't see that coming did cha? Aha! Anyways, pretty sure it works on all calculators :D
u hav a lot of free time dont u !! -_-
If you enter a number before Ran# it will be from 0 and the number that you typed
mine doesnt have a random button thing
3104559 on a calculator spells @\$\$hole
Try 2000 - 866 and turn it upside down :)
dude you can break some of the pixils by dooing that.
Calculators don't have pixels, because pixels are way to small to see. The LCD screen is different, I am not sure what the segmentsare called, but they are not pixels.
&nbsp;put your calc in SD mode (press mode and then 2). then press 0. then keep pressing M+. every time the number will be 1 higher and the good thing is you can't cheat :)
&nbsp;lol I love high score I did that for a hour in my math class
Nice Ible. I found out about the screen test a while back and freaked my friends out with it. <br /> <br />
Or get a TI-83+ and play some space invaders :P
&nbsp;but don't you lose the garantee, then?
how do you do that ?
haha XD
we did this in 5th grade type this in: you have 1 girl she is 16 years old and had 69 boy friends 11669 she did them each 3 times 11669X3 what is she now 35007
There was a girl aged 13<br/><em>13</em><br/>and she had 84 inch breasts<br/><em>1384</em><br/>She went to the doctor at number 45<br/><em>138445</em><br/>and he said &quot;Oh&quot;<br/><em>1384450</em><br/>&quot;Take these pills 2 times a day&quot;<br/><em>13844502</em><br/>But she took them 4 times a day<br/><em>13844502 * 4</em><br/>and ended up...<br/>
i didnt get it
flip the calc over when u r done
lol That's good.
lol
haha
i have memorize pi to 78 digits
I do not reccomend hitting people either
me too.
If you have a TI, you can draw. But who needs that when you have Block Dude?
haha todaly!
I have the same calculator too and I can even spell the word 'DEATH' on there! My friends are freaked out by it !! U
Nice. The screen test works on my calculator. I want to try the boot up messages one - what button is memory recall?
MRC.If you press MRC two times in a row,it deletes your mem though.
How can I do these on a Karce KC-662 calculator?
Another fun thing that me and my friend do in math is that we chat using the calculators. But after this one girl told on us the teacher put us far apart. But thanks to the calculators that you can message people on, were all good :).
I didn't notice about the "RAN" button and I have a Casio fx-991MS and I also can enter the screen checking button lol
On my calculator I found that if I typed in 1x1x1x1x1x1x1x1x1(as far as it will go) then pressed enter it took a long time to get the answer (1) :P.
I discovered that certain functions (power and the trig functions) take quite a long time. For instance, 2<sup>2</sup>2<sup>2</sup>2<sup>2</sup>2<sup>2</sup>2<sup>2</sup>2<sup>2 would stall my old Sharp for about 10 seconds, and you can make a huge stack of sin and inverse sin that will take a long time. See how long you can make your calculator hold its breath for!</sup><br/><br/>Another fun diversion for computer types is to see how many of the powers of 2 you can work out in your head, and use the calculator to check your answers. I got up to a million once.<br/><br/>If you have a purely solar powered calculator, if you cover up the solar panel enough to make the display grey out but not quite enough to reset it, sometimes you can make random garbage appear on the screen.<br/><br/>For non-calculator-related fun, say &quot;2<sup>2</sup>2<sup>2</sup>2<sup>2&quot; (&quot;two to the two to the two to the two&quot;) until it starts to sound like dance music :)</sup><br/>
Rats, the thing interpreted my power symbols. The string of 2s is meant to be 2 to the power 2 to the power 2... (but you have to use the x<sup>y</sup> key, not the <sup>2</sup> key)<br/>
actually its "2 to the power of 2 2 to the power of 2 2 to the power of 2..."
That was my point- it was meant to be <br/><pre>2 ^ 2 ^ 2 ^ 2 ^ 2 ...</pre>but the power sign is interpreted as &quot;make this superscript&quot; so it didn't work properly. The superscript notation that actually appears isn't what I meant to write.<br/>
You can also play ping pong with it..... use the calculator as the paddle
hold down shift + 7 and press on. on most casios you will be able to test all the buttons on the calculator
I looked for that, but All I've heard is shift-7. Shift+7+on works!!! I think I'll add that, giving you mention, of course.
5318008 or just 58008
COPYPENGUIN!
try typing in: 5318008 for a laugh, then turn it upside down ;)

137,613views

13favorites