A:AnswerHP calculators are either made in China or the Philippines. There are two factories making them in China. The ones coming out of the CNY factory are terrible. These are the first three letters on the serial number. The ones out of the other factory (CNA I believe) are ok, but try to find one made in the Philippines; they are of much higher quality, although still not as good as the older ones made in the USA.
A:AnswerHere how you do this on an HP 12C Calculator
Changing the Display from a Comma to a Decimal Point
1)Turn off the calculator.
2)Hold down the decimal point.
3)Continue to hold the decimal point key, while turning on the calculator.
A:AnswerThank you for your question, Hugh! This takes a 2032/CR2032 battery, which you can find here: https://www.bestbuy.com/site/energizer-2032-batteries-2-pack-3v-lithium-coin-batteries/6017135.p?skuId=6017135
A:AnswerHi James. Have you tried to reset the calculator? You might try this first:
https://support.hp.com/us-en/document/bpia5202
I'm afraid that it is unlikely to find a repair shop for this product, and purchasing a new one would probably be the most cost effective choice. That being said, here is some information on folks who repair HP calculators: https://www.hpmuseum.org/repair.htm#else
A:AnswerIt does not have alpha characters. It can be used for Real Estate test, but I would recommend the easier to use Texas Instruments BA II Plus for about the same price.