Question about HP 12c Calculator
Posted by Anonymous on
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.
Posted on Jun 04, 2015
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Posted on Jan 02, 2017
SOURCE: incorrect claculation
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
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.
Posted on Aug 06, 2008
Posted on Mar 23, 2009
Reset the calculator:
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Posted on Aug 25, 2009
This is happening because your calculator is converting the 10% interest figure into a monthly amount (ie 0.833333%), but it isn't changing the number of periods or the periodic payment into monthly equivalents. In both cases, it is assuming that payments are made at the end of each period.
So the figure of 10,168.06 is arrived at as follows:
end of period 1: 2,000.00
end of period 2: 2,000 x 1.00833333 + 2,000 = 4,016.67
end of period 3: 4,016.67 x 1.00833333 + 2,000 = 6,050.14
end of period 4: 6,050.14 x 1.00833333 + 2,000 = 8,100.56
end of period 5: 8,100.56 x 1.00833333 + 2,000 = 10,168.06
whereas the figure of 12,210.20 is arrived at as follows:
end of period 1: 2,000.00
end of period 2: 2,000 x 1.1 + 2,000 = 4,200.00
end of period 3: 4,200 x 1.1 + 2,000 = 6,620.00
end of period 4: 6,620 x 1.1 + 2,000 = 9,282.00
end of period 5: 9,282 x 1.1 + 2,000 = 12,210.20
You will need to find out from your user manual how to stop this from happening, so that all the numbers remain as annual figures. It will involve setting the number of payments per year [P/YR] to 1 instead of 12.
Posted on Oct 06, 2011
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