20 Most Recent HP 12c Calculator - Page 9 Questions & Answers


Having gone over half a year without a response to my query, I assume a new set of batteries solved the problem.
The Anniversary Edition 12C uses a much faster processor than the original 12C. The new processor also uses more current, and thus you won't get battery life as long.

HP 12c... | Answered on Feb 10, 2012


What's wrong with it?
If you want to change the number of digits shown after the radix mark, press f followed by the number.
If you want to change the radix mark between the European and US formats, turn the calculator off, press and hold the decimal point key, press and release the ON key, then release the decimal point key.
If you want to see a number other than zero, type it in.

HP 12c... | Answered on Jan 17, 2012


To switch the radix mark from the European to the American standard, turn the calculator off, press and hold the decimal point key, press and release the ON key, then release the decimal point key.

HP 12c... | Answered on Dec 29, 2011


Turn the calculator on. Press and release the [f] key. Press and release a digit key to specify the displayed number of digits to the right of the decimal point key. For example, if you want three digits to the right of the decimal point, turn the calculator on, press and release the f key, then press and release the 3 key.

HP 12c... | Answered on Dec 15, 2011


To switch to the algebraic mode press f [ALG] (the EEX key).

HP 12c... | Answered on Dec 09, 2011


I believe there are two separate issues here.
The asterisk in the lower left corner of the screen is the low-battery indicator. Put in a fresh set of batteries and that will go away.
As for not getting the correct results, are you sure you have all the modes set correctly? Could you post a sample problem, with the results you get and the results you expect to get?

HP 12c... | Answered on Dec 06, 2011


I had the identical problem. One of the fixya folks helped me disassemble the calculator, which I did (there are about 6 plastic rivets which must be reamed away before the circuit board can be lifted out). Be careful not to lose the grounding springs which go back through the two hollow plastic posts. Pull the white sticky covering back carefully, noting which contact represents the "6". Clean the contact area as described but also make sure the contact is in the dead center of the "cut outs" in the sticky film area. When reassembling, I put a small piece of ace bandage between the board and the back of the calculator (towards the bottom, do not block the metal plate where it contacts the "spongy metal" grounding box). This is needed for support since the rivets have been removed.Carefully reassemble everything including the springs. Mine worked perfectly afterward!
I do have a theory that the magnets used in the "anniversary" case have an adverse effect on the calculator. Just a hunch, since one sits over the "6" key. I don't use that case anymore. Sorry they don't make 'em like they used to!

HP 12c... | Answered on Nov 19, 2011


Begin mode is obtained by pressing [g][7] and it should then show BEGIN in the bottom line of the display. End mode is obtained by pressing [g][8]. End mode does not not show an indicator in the display because it is the default mode, so if BEGIN isn't showing, then the calulator is in End mode.

HP 12c... | Answered on Oct 07, 2011


Switch to the (potentially confusing!) American date format M.DY by pressing [g][5]. This format doesn't appear in the display because it is assumed to be the default.

HP 12c... | Answered on Oct 07, 2011


See http://www.rskey.org/~mwsebastian/selftest/hp_test.htm#voyager for details of how to perform the two self-tests.

HP 12c... | Answered on Oct 07, 2011


Prensa [g] [M.DY].

HP 12c... | Answered on Oct 03, 2011


If you mean an HP 12C, then

quick start guide:
http://h10032.www1.hp.com/ctg/Manual/c01798099.pdf

user's guide:
http://h10032.www1.hp.com/ctg/Manual/c00363319.pdf

solutions handbook:
http://h10032.www1.hp.com/ctg/Manual/c00367122.pdf

HP 12c... | Answered on Sep 17, 2011


That depends on what you want to do with the 1 and the 2. If you want to add them together, for example, you would press
1 ENTER 2 +
If you wanted to multiply them together, you would press
1 ENTER 2 *

It's not free, but you can order the HP-11C manual from
http://www.hpmuseum.org/software/swcd.htm

There's also a fairly good tutorial on RPN there at
http://www.hpmuseum.org/rpn.htm

HP 12c... | Answered on Sep 15, 2011


To switch the radix point between the US and European modes, turn the calculator off, press and hold the decimal point key, press and release the ON key, then release the decimal point key.

HP 12c... | Answered on Sep 06, 2011


Hi,
It doesn't look like a flaw with this calculator. This documentation should help you out. http://www.tvmcalcs.com/calculators/hp12c/hp12c_page1

HP 12c... | Answered on Aug 25, 2011


Check to see if the word "BEGIN" appears on your screen. If so, you are calculating the payment on an "annuity due" basis, that is, the first payment is made on day one, and each period thereafter, rather than the first payment being due at the end of the first (30 days usually) period. To fix this, press the blue "g" button, and then press the number "8" (notice the word "end" printed on that key in blue ink). This should return you to the normal (first payment due at the end of the period) option.

HP 12c... | Answered on Aug 15, 2011


Press
5 4 ENTER 4 5 + 2 0 + 3 6 + 3 2 + 1 +
on your HP 12C to see the answer.

HP 12c... | Answered on Aug 12, 2011


You can get out of programming mode by pressing f [P/R] or simply turning the calculator off and on again. The blinking asterisk is the low battery indicator. You probably still have at least a week of normal usage left, but you should replace the batteries soon.

HP 12c... | Answered on Jul 25, 2011


LR44 or equivalent batteries should be available at just about any electronics store. There are about a dozen Sydneys in the world, is there a Radio Shack store nearby?

HP 12c... | Answered on Jul 24, 2011


Initial Setup

One adjustment is important before we get started. By default the 12C displays only two decimal places. This is not enough. Personally, I like to see five decimal places, but you may prefer some other number. To change the display, press "F" and then the number of decimal places you wish to display. I would press "F 5 " to display 5 decimal places. That's it, the calculator is ready to go.
You need to hold the "F" key.---------

    1. Press and release the gold PREFIX key (f).
    2. Press the number key for the desired number of decimal places (0 through 9).
------------ Click this link below and follow the procedure:--- http://howtobyme.blogspot.com/2011/07/hp-12c-calculator-help.html
----------- This should help.Thanks.Helpmech.

HP 12c... | Answered on Jul 21, 2011

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