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Introduction

This document describes how to set the desired number of decimal places on the HP 12C Calculator in standard format and in scientific notation.

Instructions for standard format

      1. Press and release the gold PREFIX key (f).
      2. Press the number key for the desired number of decimal places (0 through 9).

    The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected.

    Example (standard format)

    If the number in the display is 14.87456320, the display will be changed as follows:

      Keystrokes

      Display

      [ f ] 5

      14.87456

      [ f ] 1

      14.9

      [ f ] 0

      15

      [ f ] 9

      14.87456320

      Instructions for scientific notation

        1. Press and release the gold PREFIX key (f).
        2. Press the decimal point key.

      Example (scientific notation)

      The number 14.87456320 will be displayed as 1.487456 01
      NOTE: A maximum of 10 digits can show on the display.


        commentPost your comment

        Great thanks for the advice of changing comma to a decimal point.
        June
        7/16/2010 6:07:53 PM - US  | commentreply


        how do get rid of the comma and get the decimal back, it now says 0,000000 instead of 0.000000
        HP12C
        7/12/2010 5:52:43 PM - US  | commentreply


        Great, simple advice. The comma in lieu of decimal was irksome indeed! Thanks.

        In reply to -:
        how do i get rid of the begin on the bottom row

        MTC
        3/22/2010 10:05:52 AM - US  | commentreply


        I also have the problem of a comma (,) instead of the decimal point (.) folliwng the first whole number.
        pat

        In reply to bobsun@mindspring.com:
        After I placed new batteries in my HP12C, I find that the unit now displays a comma (,) instead of a decimal point (.) following the first whole number.

        pat
        3/18/2010 1:51:41 PM - US  | commentreply


        I did: it reads 1,111,111 09
        When I push clear and retype it reads:111,111,111.

        In reply to chr:
        When I put in 1,111,111,111. I do not get any 00s after the decimal point. I tried pushing the gold f button and the number of spaces for the decimal point I want but it reads out 1,111,111,111. Thank you for your help.

        chr
        3/12/2010 12:55:20 PM - US  | commentreply


        When I put in 1,111,111,111. I do not get any 00s after the decimal point. I tried pushing the gold f button and the number of spaces for the decimal point I want but it reads out 1,111,111,111. Thank you for your help.
        chr
        3/12/2010 12:19:33 PM - US  | commentreply


        Press [g] [End].

        In reply to -:
        how do i get rid of the begin on the bottom row

        Peter Tong
        1/10/2010 6:00:59 PM - SG  | commentreply


        how do i get rid of the begin on the bottom row

        In reply to Peter Tong:
        Solution to this can be found here... http://www.educalc.net/144880.page.

        Anonymous
        1/10/2010 9:50:02 AM - US  | commentreply


        Solution to this can be found here... http://www.educalc.net/144880.page.

        In reply to Sharon:
        I am getting a "c" on the lower right corner of the display window of my HP12C and a comma instead of a decimal point. Not sure how I did this. Any ideas about how to turn it back to a decimal point?

        Peter Tong
        12/29/2009 10:19:05 AM - SG  | commentreply


        Have had mine for years
        Grandson got a hold of it
        Have no idea where my instruction book is

        God Bless you

        Carole
        4/3/2009 11:34:48 AM - US  | commentreply


        Did you ever get an answer to your question. I also am getting a "c" in my display after replacing the batteries

        In reply to Sharon:
        I am getting a "c" on the lower right corner of the display window of my HP12C and a comma instead of a decimal point. Not sure how I did this. Any ideas about how to turn it back to a decimal point?

        John
        12/12/2008 3:00:57 PM - US  | commentreply


        my HP12c is now displaying a comma after the first whole number. Cannot get it to return
        to two decimal places

        In reply to bobsun@mindspring.com:
        After I placed new batteries in my HP12C, I find that the unit now displays a comma (,) instead of a decimal point (.) following the first whole number.

        Jan Dean
        12/4/2008 7:36:15 PM - US  | commentreply


        I am getting a "c" on the lower right corner of the display window of my HP12C and a comma instead of a decimal point. Not sure how I did this. Any ideas about how to turn it back to a decimal point?
        Sharon
        10/31/2008 2:37:11 PM - US  | commentreply


        Someone knows, how to deactivate the function who rounds on .05?

        When I enter 12.23, it displays 12.25.
        When I enter 12.22, it displays 12.20...

        Thanks

        obikela
        9/23/2008 2:29:04 PM - CH  | commentreply


        WOW!!!! This took seconds. Prior to the site, I´ve spent ??? (lots of time) to figure this out and failed.
        Leonard
        7/25/2008 12:35:06 PM - US  | commentreply


        Press the orange button with the f, then press the number button that represents the number of decimal places you want.

        In reply to Leuter:
        How do you set the decimal place?

        windgate
        7/11/2008 10:22:59 PM - US  | commentreply


        How do you set the decimal place?

        In reply to :
        With you site, I finally figured how to set decimal places. Thanks!

        Leuter
        7/11/2008 10:55:00 AM - US  | commentreply


        awesome
        josefa
        11/5/2006 6:38:51 PM - AU  | commentreply


        Liz,
        I have the same problem, but cant find the fix. Can you tell me how?
        Thanks
        pat

        In reply to Liz:
        Thanks! While traveling my HP 12C got set on some crazy exponential decimal places and I couldn´t use it. This site was a great help to get me back on track.

        pat
        3/17/2006 12:25:05 AM - US  | commentreply


        Hi Gene, you may want to try the reset command. http://www.educalc.net/144618.page

        In reply to Gene:
        how do I change the comma to a decimal point? Also, I have a little c that has shown up on the far right side. Please help me to remove this. I have misplaced my manual. Your help is greatly appreciated.

        Peter Tong
        3/12/2006 5:30:16 PM - SG  | commentreply


        how do I change the comma to a decimal point? Also, I have a little c that has shown up on the far right side. Please help me to remove this. I have misplaced my manual. Your help is greatly appreciated.
        Gene
        3/12/2006 9:29:49 AM - US  | commentreply


        Like the other comments, I no longer had the manual and screwed up the decimal point. Most reliable calculator in the world - thanks HP!


        Helena
        2/16/2006 10:01:45 AM - US  | commentreply


        Thanks! While traveling my HP 12C got set on some crazy exponential decimal places and I couldn´t use it. This site was a great help to get me back on track.
        Liz
        1/27/2006 9:35:15 AM - US  | commentreply


        Thank you. This is a very helpful resource.
        Mike
        1/3/2006 10:57:16 PM - US  | commentreply


        Thanks mate. I lost the instructions with my calculator 11 years ago and little tips like these are very useful.
        Anth
        4/15/2004 11:57:00 PM - UK  | commentreply


        Bobsun, during the battery change, your hp12c may been resetted to default. The following is the link... http://www.educalc.net/144880.page for the procedure to change , to .
        Peter Tong
        2/28/2004 5:11:55 PM - US  | commentreply


        After I placed new batteries in my HP12C, I find that the unit now displays a comma (,) instead of a decimal point (.) following the first whole number.
        bobsun@mindspring.com
        2/26/2004 2:28:51 AM - US  | commentreply


        Thank you! Very helpful site.
        Mrs. Gates
        1/22/2004 4:05:59 AM - US  | commentreply


        With you site, I finally figured how to set decimal places. Thanks!
        Anonymous
        12/29/2003 10:15:44 PM - US  | commentreply


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