Question about HP 12c Calculator

# Incorrect claculation I have an old HP 12c (10 years) and I noticed today that the TVOM calculations do not agree with calculation done in excel or open office. I believe the calculator is returning an incorrect value. For example, assume a PV of 12,000, annual interest off 6.34% (monthly i of .005283), and a period of 36 months. Excel returns a pmt of (\$366.91). The calculator returns a pmt of (\$333.64). Is this calculator shot? Or could it be that it just needs batteries?

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I get an answer of 366.91 in my 12C as well. You might try either putting in a zero for FV before hitting the [PMT] key, or clearing your registers before doing the problem, as you may be picking up an old value from a previous problem in the FV register.

Posted on Jan 30, 2008

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Posted on Jan 02, 2017

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## Related Questions:

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There is an excellent computer-based tutorial for the HP 12c Platinum on HP's website (although the sequence for TVM calculations is the same for the original 12c).
Download it and have a look. It will guide you key-by-key through the steps.

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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.

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The common logarithm of x is the natural logarithm of x divided by the natural logarithm of 10, or
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Jun 06, 2011 | HP 12c Calculator

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Hi, I THINK YOUR CALCULATOR PROGRAM HAS BEEN COUREPTED . PLEASE GO TO THE CALCULATOR EXPERT.THE EXPERT RELOAD THE PROGRAM SAFELY,OTHERWISE YOU MAY HARM YOUR DEVICE. PLEASE DOM'T FORGET TO VOTE ME. GOODLUCK

Jan 24, 2011 | HP 12c Calculator

### 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...

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Dec 31, 2010 | HP 12c Calculator

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The same thing happened to me today. Try performing a hard reset (small hole near battery). Worked for me.

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I couldn't find any reference to a HP calculator model 12p.
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