Question about Aurora Electronics Office Equipment & Supplies
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Posted on Jan 02, 2017
There are plenty of casio 991 manuals here. Take your pick!
Dom't forget to leave feedback if it solves your problem. 'fixya'!
Posted on May 01, 2008
1. To convert a number to scientific equation, use [2nd][Sci]
Exemples 12345 [=] screen shows 12345 Then [2nd][Sci] coverts it to 1.2345 ^04 to the power 4.
2. To enter directly a number in scientific notation (e.g. -1.2345 X10^(-65) a very small number) you use the [EE] key 1.2345[+ /-][EE][+/-]65 shows as -1.2345 -65
1.6X10^(-19) 1.6[EE][+/-]19 shows as 1.6 -19
Hope it helps
Posted on Sep 17, 2009
Sorry to disappoint you: This calculator is not programmable.
Posted on Nov 30, 2009
Testimonial: "Very much appreciated, quick response etc. "
I have found the company site for you. Here it is. You can send an inquiry to them.
But from the looks of it, I believe this calculator is rebranded Casio FX-82. An even if I am wrong, you should still be able to make good use of the Casio FX-82 manual to understand how your calculator works. Scientific calculators do not differ much from one another.
Here is the link to the Casio FX-82 manuals.
Posted on Jul 23, 2010
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