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Help I need a manual!

I bought a corner office graphing scientific calculator and the manual writing inside is to small to any one know where I can et one in large print?

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  • Anonymous Apr 21, 2008


    LISA CLEVELAND Mar 19, 2009

    I bought a Corner Office ATC-139 graphing calculator. The print is so small I can't read it. Please, I need a manual I can read to use it the way it is meant to be used for and the reason I bought it. Help.

  • billifam2000 Apr 13, 2009

    I have mistakenly pressed the BASE-N function on my office corner calculator but I don't have a manual,so it is difficult for me to get my calculator back to normal function.Can you help me change from Base-N function to the normal function,because the BASE-N function keeps appearing on my calculator each time I turn it on.Thanks.My email address is


5 Suggested Answers

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SOURCE: scientific notation

you want to hit mode not menu and then make sure that normal is flashing instead of SCI and hit enter. so just hit mode then enter and it should be normal

Posted on Jan 14, 2008

  • 333 Answers

SOURCE: instruction manual for Casio fx -991 Scientific calculator

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

SOURCE: casio scientific calculator fx-4000P

go to :

Posted on Jul 18, 2008

  • 1 Answer

SOURCE: Durabrand 828 scientific graphing calculator
Durabrand 828 and LeWorld 282 are the same calculator. I too lost my tiny manual happy calculating !

Posted on May 09, 2009

  • 7993 Answers

SOURCE: Inputing scientific notation into my calculator


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

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