Q: How do I enter a negative number into one of the TVM keys on the 12C?Ī: Well, the proper way to do it is by using the CHS (change sign) key. Also, it has pointed out to me that HP provides programming instructions to solve this problem. If you need to find the exact answer, please see my time value of money formula pages. So, it really does take 4 deposits, but they aren't all the same. In actuality, you would make 3 annual $225 deposits, followed by a fourth deposit of $101.49. However, the 12C will tell you it will take 4 payments. For example, it will take 3.65497 deposits of $225 to reach a future value of $1,000 at 15% interest. So, the fractional part indicates that you will make a final payment, but it will be less than the other payments. If you think about it, there is really no such thing as a fractional payment (e.g., 3.66 payments). I can't claim to know the mind of the original designers, but I think that I can posit a good guess. Why is the answer always an integer?Ī: Good question! Virtually every other financial calculator (and Excel's NPER function as well) will return the exact mathematical solution, including fractional periods. Q: When I solve for N (number of periods), I don't get the exact answer. You can also get them a lot (!) cheaper online at than from your local store. That is exactly the number that you need, and you should get a significant discount compared to buying them individually. Do yourself a favor and look for the multi-pack of these batteries. ![]() There is a diagram on the case next to the batteries that shows the appropriate orientation. Change it by removing the sliding lid on the back of the calculator behind the screen. The 12C uses one coin-size battery numbered CR 2032. Q: What batteries does the HP 12C use, and how do I change them? ![]() So, try that if your 12C seems to be stuck. I suggested that he briefly remove the batteries and try again. Note: I had a question from a reader who couldn't get his 12C to change the number of decimal places. For example, to display five decimal places, press f 5. Q: How do I change the number of decimal places that are displayed?Ī: Simply press the f key and then a number key. Note that after a reset, you will need to reset your customizations (such as the number of decimal places displayed). Pressing any key will clear that message.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |