# How do I get the comma in my nmbers (EU notation) to go back to a decimal point (US)?

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Turn the calculator off. Press and hold the decimal point key, press and release the ON key, then release the decimal point key.

Posted on Mar 16, 2011

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Posted on Jan 02, 2017

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### I just changed batteries, and now there is a comma where there used to be a decimal point, and decimal points where there used to be commas for separators

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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!!

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From HP12c FAQ:
This document describes how to change the display of the decimal point on the HP 12C Calculator from a comma 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. *
http://h10010.www1.hp.com/wwpc/us/en/sm/WF05a/215348-215348-64232-20036-215349-33525.html

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