Question about Casio Scientific Calculator Fx-82es Plus
I am sorry to disappoint you. I looked on the back of two different Casio Calculators and there is nothing that could be considered a Serial Number (Unique Identification number). If you had a serial number on a bill of sale or receipt and find the calculator with the same serial number you could claim it is your. But there is no such a number for this class of calculators. Get yourself another one and take better care of it. How do you know the person you accuse of stealing your calculator has not bought one too?
Posted on Feb 13, 2014
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Posted on Jan 02, 2017
SOURCE: Cant get the % key turned off.
HI..if this is a printing calculator and the print mode is turned...if there is a problem with the printer and E for Error will appear. The ribbon or some paper could be jammed in the printer..a key could be stuck down..check your entire keyboard key for sticking.
The calculator wont hurt itself and that is why the E is on. Examine it very carefully and look for something caught in it.
If none of the above you might have to get a pro to look at it.
Hope this helps you out....
Posted on Feb 07, 2008
SOURCE: CASIO DR250TM CALCULATOR
In case you haven't found the solution yet. This is it.
Move buttons to "Print" and "F"
Press CA key
Press % (set Key)
Press and hold down the % (set key) until the numbers come back and start flashing.
Put in the correct numbers.
Press % (set key) again and your done.
Hope this helps.
Posted on Feb 11, 2009
SOURCE: Tax Rate change on calculator
1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]
Otherwise, see the Casio's FAQ page
Posted on Apr 06, 2009
In any scientific calculator log2(n) can be calculated with either ln or log function as
Log2(n)= ln(n) / ln(2)
Log2(n)=log(n) / log(2)
both will give nearly the same answers
Posted on Apr 24, 2009
This works on several different casio calculators
Press AC butoon
Press AND HOLD % /Rate Set button for 2 to 3 seconds - This is important
Press Tax+ button
Input the tax rate you want eg: 12½% = 12.5
Press the % /Rate set button again
Posted on Sep 01, 2009
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