HP 12C Error 5

[Atomic_Sheep]

Hi Guys,

I'm trying to solve some time value of money questions and I keep getting Error 5 and the error codes in Appendix D of the user manual don't make any sense since I'm putting all the required values in and none of the conditions of the errors are met.

Example:

PV = $1,000

FV = $1,061.68

n = 12

when I press i to calculate the interest, i get error 5.

The same thing happens when I try to solve for n by inputting i instead. Again the error code explanations don't relate to me.

Any suggestions?

[BartdB · Accepted solution]

Hi,

Enter a negative for FV, as this is what you pay out  at the end (assuming it's a loan and you received $1000 at the beginning):

Example:

PV = $1,000

FV = $-1,061.68

n = 12

Interest should now evaluate to 6%.

Also see "Cash Flow Sign Convention" on page 36 of the HP-12C user guide

[Maké]

Hi!, @Atomic_Sheep:

Remember the sign convention: money received = positive number, money paid out = negative number.

Try, with these Youtube videos ...

Time value of money calculations using the HP ...

App YouTube

Time value of money calculations using the HP ...

App YouTube

Too, from ... http://support.hp.com/us-en/document/bpia5185 

[Atomic_Sheep]

Thanks guys, was so obvious.

[Pavansagi]

HI bart, I had brought HP 12C Platinum calculator my actuarial course unfortunately I am unable to chenge the sign for cash flows kindly help me out with this

[Pavansagi]

Good evening professor, I had brought HP 12C Platinum calculator for my actuarial course unfortunately I am unable to chenge the sign for cash flows kindly help me out with this,

[Maké]

Hi!, @Pavansagi:

Is this what you're needing?. If not, do you could be more explicit in indicating an example what you need?.

Source, of origin ... http://www.tvmcalcs.com/calculators/hp12c/hp12c_page3 

Present Value of Uneven Cash Flows :

In addition to the previously mentioned financial keys, the 12C also has keys labeled CF0 and CFj (the cash flow keys) to handle a series of uneven cash flows.

Suppose that you are offered an investment which will pay the following cash flows at the end of each of the next five years:

Period Cash Flow

0	0
1	100
2	200
3	300
4	400
5	500

How much would you be willing to pay for this investment if your required rate of return is 12% per year?

We could solve this problem by finding the present value of each of these cash flows individually and then summing the results. However, that is the hard way. Instead, we'll use the cash flow keys. All we need to do is enter the cash flows exactly as shown in the table. Again, we must clear the cash flow registers first. In this case we need to press f X><Y. Now, enter the time period 0 cash flow into CF0 and the remaining cash flows into CFj. To enter the cash flows, simply press g then the appropriate key (either PV or PMT). We must also enter the interest rate into i. To get the present value of the cash flows press f PV(you'll see that the shifted version of PV is NPV). We find that the present value is $1,000.17922. Note that you can easily change the interest rate by simply entering a different rate into i and the solving for NPV again.

Future Value of Uneven Cash Flows :

Now suppose that we wanted to find the future value of these cash flows instead of the present value. There is no key to do this so we need to use a little ingenuity. Realize that one way to find the future value of any set of cash flows is to first find the present value. Next, find the future value of that present value and you have your solution. In this case, we've already determined that the present value is $1,000.17922. Clear the financial keys (f X><Y) and then enter -1000.17922 into PV. N is 5 and i is 12. Now press FV and you'll see that the future value is $1,762.65753. Pretty easy, huh? (Ok, at least its easier than adding up the future values of each of the individual cash flows.)

[Pavansagi]

Thanku professor for your support, however my problem isn't with respect to calculations, my issue is with hardware, I had done everything to change the sign but it wasn't, how do I get it rectified in India, sorry for bothering you, if you are not the one I am looking for.

[Maké]

Hi!, @Pavansagi:

For change signal if you HP12C run OK, is ...

Now, if you have problem's, with your keys, you can call, to HP Support Assistance, more near, your home, from ... http://www8.hp.com/in/en/contact-hp/phone-assist.html 

Too, see, this video's ... 

https://www.youtube.com/watch?v=qERwsdjoX7c

https://www.youtube.com/watch?v=NVCHHV_sbuU

[Pavansagi]

I didn't understand in the first line, but visual aids are worth watching, anyway thanks professor for your support, I tried to contact them but today is holiday in my location I should contact them for my issue, nice to converse with you professor.