You want your own personal calculator ? No Problem with the turned display color.
Very easy and fast.
Have Fun with it.

And sorry for the dark pictures and my bad english ;-)
Its my firt instructable

Step 1: Screw on Your Personal Calculator

Turn and Screw on your Personal Calculator.
Be Careful with the wires.

Step 2: Turn the Foil

Take out the display foil and turn it.
If the calculator is turned on, you will the the result.

Step 3: Finish

Close the Calculator and have Fun.

who do we screw on the calculator? hmmmmmmmm :P
Dude, i can't see... i think i really didn't understand it...
This not only works with any calculator, it works with any LCD. It doesn't matter if it's a color display (I'm not sure what would happen if it was, probably inverted colors). It has to do with the polarizing filter. for more information, read the links:<br/><br/><a rel="nofollow" href="http://en.wikipedia.org/wiki/Liquid_crystal_display">http://en.wikipedia.org/wiki/Liquid_crystal_display</a><br/><a rel="nofollow" href="http://www.howstuffworks.com/lcd.htm">http://www.howstuffworks.com/lcd.htm</a><br/><br/>I have an instructable planned along these lines...<br/>
Uhh. Sorry. -'d for not making much sense.
you can also put other kinds of things like colored paper as well.
I mean this Black and White Displays <sup></sup><br/>
sweet *pause* sweet, does this work with every calculator?<br/>
wait, my calculator has a black and white display (no color)

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