Question about HP 12c Calculator

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Calculator dead recently i used my 12c calculaor and it was fine. Powered it off and the next day turned it on and "nothing". I thought it might be batteries so I installed new batteries, still nothing??? I did not drop, haven't had any problems to date with it--puzzled??? Tony

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  • Anonymous Nov 28, 2008

    I can't open the calculator!

  • Anonymous May 21, 2009

    I have the same problem my office mate and me both had the same problem I changed my battery and it worked, he changed his and we still cant get his to turn on it just sits in the desk we didnt drop it or abuse it in any way HELP he thinks I broke his HP12c

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  • 307 Answers

Can you plug it directly into a adapter, and will it work?

Posted on Jun 28, 2008

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1 Answer

Hp 12c d.my


To switch the date representation from Day-Month-Year to Month-Day-Year press g [M.DY].

Oct 20, 2013 | HP 12c Calculator

1 Answer

I am currently studying for the CFA Level I exam, during which only two calculators can be used: the TI BA Plus II and the HP 12C (or 12C Platinum. I've decided that I want to go with the HP 12C for a...


Personally, I'd go with the regular, or the Plus, staying away from the Platinum. There's nothing on the calculator or package to distinguish the Plus from the regular, but the Plus uses two coin batteries while the regular uses three button batteries. The Plus is just like the regular, except a LOT faster.

Dec 31, 2010 | HP 12c Calculator

1 Answer

HP12c showed expected display for low battery (star in lower left), put new batteries in and could not get any display at all. Took betteries out of mine (working great!) and now the one not working shows...


Resetting the calculator using the keyboardThe easiest reset is done from the keyboard. To reset the calculator, follow the procedures below in the order presented.
  1. Press ON to turn off the calculator.
  2. Press and hold [ - ] .
  3. Press and release ON .
  4. Release [ - ] .
  5. The screen will display “Pr Error
  6. The calculator will reset to the default settings, and the memory will be erased.

Aug 04, 2010 | HP 12c Calculator

1 Answer

How do I change a comma to a decmil point on the HP12c on my i phone?


You didn't specify which 12C emulator you're using, so if this procedure doesn't work, please refer to the instructions for your emulator. On a real 12C, with the calculator turned off, press and hold the decimal point key then turn the calculator on.

Mar 26, 2010 | HP 12c Calculator

1 Answer

My decimal changed to a comma, how do i change it back?


Hi,

P12c display from Comma to Point This document describes how to change the display of the decimal point on the HP 12C (HP12C) Calculator from a comma (commas) back to a decimal point.
Instructions
  1. Turn off the calculator.
  2. Hold down the decimal point.
  3. Continue to hold the decimal point key, while turning on the calculator.
The comma should change back to a decimal point.
Explanation The comma is the European equivalent of the decimal point.
This procedure is also applicable to HP12CP (Hewlett-Packard 12c Platinum) and HP12CPA (Hewlett-Packard 12c Platinum 25th Anniversary Edition).

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Feb 04, 2010 | HP 12c Calculator

1 Answer

My 12c fin calculator will not come on even with a new battery.. help


Hi,
you should perform calculator tests to verify the good working order of the calculator.
  1. With calculator OFF, press and HOLD the [X] key, then press [ON]
  2. Release the [ON] key, then the [X] key.
This sequence initiates a complete testing of the circuits. If all is well., the calculator should display -8,8,8,8,8,8,8,8,8,8 and all indicators should be lit for about 15s. The calculator displays running.
If calculator displays Error 9, another result, or displays nothing it needs to be repaired.

Hope it helps.
Thank you for using FixYa.

Nov 21, 2009 | HP 12c Calculator

1 Answer

HP 12C


gtabblt.gif Description gtabblt.gif Resetting the calculator using the keyboard gtabblt.gif Resetting to drain the capacitor gtabblt.gif Other solutions gtabseps.gif Description Sometimes a calculator will lock up or will not respond correctly. The calculator may require a reset for a variety of reasons. These resets will erase the memory on the calculator and restore the calculator’s defaults. For this reason, it is important to back up any critical data. Resetting the calculator using the keyboard The easiest reset is done from the keyboard. To reset the calculator, follow the procedures below in the order presented.
  1. Press ON to turn off the calculator.
  2. Press and hold [ - ] .
  3. Press and release ON .
  4. Release [ - ] .
  5. The screen will display “ Pr Error
  6. The calculator will reset to the default settings, and the memory will be erased.
If the above reset did not restore the calculator to normal, continue to the next section.

Sep 04, 2008 | HP 12c Calculator

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