# Hi, my 10BII suddenly shows 0,0000000... in the window, and even when I type in new figures they end in ,00000.... The calculator has shut off and when I turn it on again there's the comma. This wasn't happening last night, and tonight's my mid-term - help!

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• HP Master

To change the number of digits displayed after the radix mark (decimal point), press SHIFT DISP and then the number you want.

To switch the radix mark between the US and European modes, press SHIFT ./, (the key in the center of the bottom row).

Posted on Jun 11, 2014

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Posted on Jan 02, 2017

SOURCE: CPT button on HP Calculator

You don't need a cpt button on Hp 10ii calculator.You can just press the function button that you want to apply without pressing cpt first.

Posted on Oct 07, 2009

The 10bII does not have a key for the common logarithm function. You can use the natural logarithm function (LN, the shifted function of the 2 key) to compute the common logarithm of a number using the relationship
log(x) = ln(x)/ln(10)

In words, calculate the natural log of the value and divide it by the natural log of ten.

Posted on Nov 07, 2010

SOURCE: I have a HP 10bII

You can use the I/YR key on the top row to enter/calculate the interest rate.

We can't tell whether your numbers are correct or not without seeing them. Could you post the problem?

Posted on Feb 08, 2011

What you've done is calculate the future value after 3 months, not 3 years.

Press 1 SHIFT [P/YR] to set the payments per year to one. Now the FV key should give you 115.76

Posted on Feb 15, 2011

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## Related Questions:

### Calculator calculated (solving for FV) 5 N, 10 I/YR, -2000 PMT, FV= 10,168.06 But the answer should be 12,210.20 Help? :(

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.

Sep 06, 2011 | HP 10bII Calculator

### Hi: I bought a HP 10bii Financial Calculator. I find it difficult to get a correct answer... For an easy example, I try to find the future value of \$100 today after 3 years with an annual interest rate...

What you've done is calculate the future value after 3 months, not 3 years.

Press 1 SHIFT [P/YR] to set the payments per year to one. Now the FV key should give you 115.76

Feb 15, 2011 | HP 10bII Calculator

### I have new batteries in it and the screen is still extremely dim and sometimes won't even turn on.

Try adjusting the screen contrast. Press and hold the ON key and press the + key to increase the contrast. If you go too far, repeat the process with the ON and - keys.

Nov 27, 2010 | HP 10bII Calculator

### What is the LOG function on the HP 10bII calculator?

The 10bII does not have a key for the common logarithm function. You can use the natural logarithm function (LN, the shifted function of the 2 key) to compute the common logarithm of a number using the relationship
log(x) = ln(x)/ln(10)

In words, calculate the natural log of the value and divide it by the natural log of ten.

Nov 06, 2010 | HP 10bII Calculator

### CPT button on HP Calculator

You don't need a cpt button on Hp 10ii calculator.You can just press the function button that you want to apply without pressing cpt first.

Dec 17, 2008 | HP 10bII Calculator

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