Question about Canon P23-DHV Calculator

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The calculator turns itself off after a short time of non-use, so I have to re-enter whatever I was calculating. Is this normal, or do I have a defective machine?

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This is normal, Just everyonce in a while you will have to turn it back on.

Posted on Feb 10, 2010

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If you're adventurous:
note the location of the non-working keys
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unscrew all screws from the back of the calculator
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Mar 11, 2011 | Texas Instruments TI-84 Plus Calculator

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Jan 11, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

When I type a problem into the TI84 it will give me the answer with an Error. Example, I type in 2+2 and get 4E0. This happens with everything I enter into the calculator. How to I fix this?


Sorry, but it takes sometime to be well familiar with the calculator. The E in the result is a short-hand notation for times 10 to a power. What you got is 4x10^(0) which is just 4.
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Not knowing what to do, I tried anything that could possibly help:

I installed fresh batteries and I pushed the reset button on the back of the calculator (Sharp EL-546L) and finally, it work all right after more than 5 years I own the calculator and where it did work correctly for 5 minutes. I tried the reset button in the past (long time ago) and it didn't work. This time it worked because, maybe, I've used fresh batteries.

Marcello

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CFX-9850GaPlus


I think the F-D function only works one direction from fraction to decimal. Decimal to fraction is a non trivial calculation that can have multiple answers so doesn't lend itself to a calculator feature.

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