I have a TI-83 (not plus), and everything was functioning well -- no problems up until now.
I cleared the memory since there was a lot of unneccessary junk, but now, my calculator will not even turn on.
I've attempted to do the "Hold down Clear while re-installing new battery, then pressing Clear and On at the same time," but it still does not turn on.
Please help. Thanks!!
Remove one of the AAA batteries. Press and hold the DEL key. While holding DEL, reinsert the AAA battery and then turn the calculator on. The calculator should display "Waiting...Please install calculator software now". Follow the instructions for the TI-83 family or TI-84 Plus family to reinstall the calculator operating system.
Posted on May 18, 2008
I used to have 4 decimal places and someone I now only have 1 decimal place to the right of the decimal point, and I'm not sure how to reset... thanks.
I found this solution on the HP website. Turn it on, and do what it says. Then turn it off and back on again, and the extra decimal places should show.
http://h10025.www1.hp.com/ewfrf/wc/document?dlc=en&lc=en&cc=us&docname=bpia5183
Introduction
This document describes how to set the desired number of decimal places on the HP 12C Calculator in standard format and in scientific notation.
Instructions for standard format
The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected.
Posted on Apr 23, 2009
How do I convert .1111111111 (or any other decimal) to a fraction?
Hello,
In addition to 1/2 =0.5, 1/3=0.33333333 , 1/4=0.25, 1/5=0.20 , 1/6=0.66666666666, 1/8= 0.125, 1/10 =0.1, there are two decimal numbers that are worth remembering because they are so easy to remember. These are
1/9 =0.111111111111111111111 ...
1/11 =0.099999999999999999999 .....
Your fraction is therefore equal to 1/9
I skimmed the whole manual but could not find a way to convert a decimal number to a fraction on the calculator. There are however two functions, one to extract the integer part [g][INTG], and the other [g][FRAC] to extract the fractiona part of a number.
Sorry. Hope it helps.
Posted on Oct 06, 2009
Somehow the display on my hp12c went into "scientific notation" and will not come out of scientific notation. Any ideas how to go back into non-scientific notation? The manual is mum on it...
Hello,
To exit the scientific display format press the [f] key followed by the number of decimal digits you want.
Hope it helps.
Posted on Nov 02, 2009
My hp12c displays D.My, how do I remove this?
You're in Day-Month-Year format. To switch to Month-Day-Year format, press g MDY.
Posted on Oct 15, 2010
my 12c has a flashing asterisk in the left hand corner. how do I turn it off?
That's the low battery indicator. To turn it off, replace the batteries with a new set.
Posted on Jan 19, 2011
can I use the HP 12c to figure out square roots of numbers
Absolutely. The square-root function is the blue g-shifted function of the y^x key, 2nd row, leftmost column.
As an example, to calculate the square root of 5, press 5 g [square-root].
Posted on Jun 06, 2011
The zero key on my HP12c sometimes does not work. Typically it will work if I whale on it, but it is a pain.. Maybe I can try to take it apart and blow air into it or something? What causes keys to stick of become less sensitive? It seems a shame to trash the calculator over such a simple issue..
This may sound ridiculously easy - but, my number 1 key didn't work unless I pressed it very hard. This was true for YEARS. I read about opening the calculator and cleaning it, which sounded awful. I simply blew very hard into the calculator on that button and it works now. Maybe I blew away some dirt/ dust that was stuck under the number. Try this before opening your calculator and save yourself time and headaches!
Posted on Oct 07, 2018
how do i put a negative sign in front of a number on my hp12c calculator
Press the CHS (CHange Sign) key.
Posted on May 31, 2014
how to calculate a square root on HP12C
Use the square-root function. It's the g-shifted function of the y^x key, leftmost on the second row. For example, to calculate the square root of two, press 2 g square-root
Posted on Jun 01, 2014
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