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HP 12c Gold

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Is there a serial number date of mfg. chart for the 12C? I have 4, marked USA, China and Singapore. Various rear markings, identical operation.
Dryfire
12/14/2009 6:13:49 PM - US  | commentreply

STO + EEX
In reply to Ray:
I have a 12c hp calculator. Some time ago, the display showed "c" in right side corner and I cannot get rid of this. Please let me know how to erase this. Thank you.

Anonymous
9/15/2009 11:18:20 PM - US  | commentreply

I have a 12c hp calculator. Some time ago, the display showed "c" in right side corner and I cannot get rid of this. Please let me know how to erase this. Thank you.
Ray
7/6/2009 12:09:05 PM - US  | commentreply

turn off your calculator. Hold down the decimal button . while you press the ON button.
This will reset it back to decimal points for fractions and commas to separate 1,000´s
In reply to -:
I must have hit a wrong button (and lost my HP12C hand book to boot!!), but could someone tell me how to reset from 0,000 to 0.000 (comma vs dot)...thanks for any help....Joe...

nate
5/7/2009 6:37:04 AM - US  | commentreply

Hi, you can find the fix here.
Peter Tong
3/24/2009 6:51:13 AM - SG  | commentreply

I have the comma (0,00) issue. Were you able to correct the issue?
In reply to -:
I must have hit a wrong button (and lost my HP12C hand book to boot!!), but could someone tell me how to reset from 0,000 to 0.000 (comma vs dot)...thanks for any help....Joe...

Ben
3/18/2009 8:13:33 AM - US  | commentreply

Hi,

I am looking for a "Owner´s Handbook and Problem-Solving Guide" in French for my HP-12C.
Any idea where I could find this ?
Thanks

Christophe Michaud
1/20/2009 12:33:55 AM - SG  | commentreply

Hello,
I would like to request specific instructions on how to solve for the IRR of a life insurance product, using my HP12. I have the date of purchase, four premium payments and a death benefit. Any help would be appreciated! Thanks in advance.

rck
1/16/2009 3:04:13 PM - US  | commentreply

I think the best models of hp 12 C was made in USA and Brazil in the years 1981 82 83 USA and 83 86 both USA BRazil and 87 92 Brazil before goes to Singapore.
Joao C. N. Vargas
10/25/2008 12:25:22 PM - BR  | commentreply

For all ya answers goto the source.

http: h10032.www1.hp.com ctg Manual c00363319.pdf

(Function Key chart - pages 203 & 204)

________________________________
Lewis Donofrio 734-355-0592
Sr. Windows UNIX Systems Admin

Lewis Donofrio
9/9/2008 6:35:06 AM - US  | commentreply

Seems like a common refrain, no handbook, but. In my display I have an asterisk in the lower left hand coner and I do not know why it sits there pulsing. I thought it might be weak batteries, so I replaced them and it does not seem to have any impact.
Bill Wood
4/8/2008 3:41:05 PM - US  | commentreply

I must have hit a wrong button (and lost my HP12C hand book to boot!!), but could someone tell me how to reset from 0,000 to 0.000 (comma vs dot)...thanks for any help....Joe...
Anonymous
4/2/2008 6:42:13 PM - US  | commentreply

IŽd like to determine the NPV of a $300k (one-time) payment due in 10 years. Assume 6% interest rate. Lost my 12-C manual. How do I calculate this? Thanks.
forgot to include my e-mail address first posting. apologies.

Michael
2/15/2008 9:40:32 PM - US  | commentreply

Does HP 12C calculate on 360 day or 365 day interest calculation when calculating payments for amortized loan.
Ankit
9/13/2007 12:11:12 PM - US  | commentreply

it is time to replace its batteries.
In reply to Gonzo:
My HP12C runs well, but has a "blinking asterix" on the lower left hand corner of the display screen. IS that "normal"?? What is that telling me?? Can I delete it??

Anonymous
3/30/2006 1:34:38 AM - SG  | commentreply

My HP12C runs well, but has a "blinking asterix" on the lower left hand corner of the display screen. IS that "normal"?? What is that telling me?? Can I delete it??
Gonzo
3/2/2006 3:30:38 AM - US  | commentreply

Great site, thanks very much!

Chris
http://amateureconblog.blogspot.com/

Chris Meisenzahl
1/21/2006 1:08:58 AM - US  | commentreply

does anyone know a US source for a replacement clear plastic view screen for the HP12c?
Professor
1/12/2006 6:20:50 AM - US  | commentreply

Is there a way to format with out a decimal or period indicating the thousands?
LF
8/25/2005 12:14:53 AM - US  | commentreply

I am hoping to buy the 12C for 45 students of mine. I am in johore and much obliged if you could quote the best deal possible.

rosdi

Rosdi
7/28/2005 10:51:09 AM - MY  | commentreply

You rule!

Thanks for saving my brain from melt down!

Anonymous
5/24/2005 1:16:37 AM - US  | commentreply

I have just downloaded a the basic 12c calculator program to my handheld iPaq PDA and wanted to calculate accrued interest for bonds. From your tutorial it talks about pressing X> but I gather that must be a key on the 12c Platinum, since I can´t find a X> key on the 12c. Can anyone advise?
Murray Leiter
7/3/2004 12:54:52 AM - CA  | commentreply

Your strange 12C display may disappear if you short across the battery terminals from end to for a moment with the batteries in place. Several shorts may be needed. Use tweezers or metal paper clip.
DAVE ALLEN
4/27/2004 12:29:35 AM - US  | commentreply

here´s the display:

00000U _
rad


any ideas would help. can´t get rid of the display even if I take the batteries out. Put the batteries back in and it´s back.

BOB
4/14/2004 7:29:13 AM - US  | commentreply

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