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The TI-30X IIS is a scientific calculator with trigonometric functions first introduced by Texas Instruments in 1993. It uses both a battery and a solar cell for power.

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Automatically adds a digit to the end of my entry

My calculator automatically adds a 9 to my last number every time I try to do math. For example, I type 5 + 6 and expect =11, but calculator does 5 + 69 and I get =74 :(

The 9 button does not appear to be sticky.

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Technical support just helped me fix the same issue. You need to reset the calculator. Press the "2nd" key followed by "0". Arrow down to option 2 "yes". Problem fixed.

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worked for me ty

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This worked for me thanks so much

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Mahalo! That worked for me, too.

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OMG! I can't believe it was that easy to fix. Thank you very much!

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mine kept adding 0.5, and this just fixed it, thanks so much!!

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One of my calculators is adding a digit to the end of each entry.

I know how to reset the calculator but when I try, I am unable to arrow over to Y on this screen:

RESET: N Y

I also tried holding down ON and CLEAR at the same time but that is not working to reset the calculator either.

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thank you so much

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You are a legend

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shorted PCB keys, try to clean the PCB keys with alcohol (To dismantle, you'll need to apply hot air on the boss around 200°C)

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Does anyone know how to do this on purpose?

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I’m also curious about how to make this happen on purpose. Thanks for the solution by the way, real life-saver

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0.5 2nd and the arrow

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If you notice there is a small k on the bottom right. The constant. Here is information about it and how to set it. I can be used for "good" not "evil" For example: If you are doing a process over and over like # X 2 + 3. You can store the operations as k, then just put in the number and hit =. If you put in a 9 and hit =. It would show 9 X 2 + 3 = 21. Or maybe just X 2. Old calculators, you could hit the = to keep doing the same thing like X 2, X 2, .... This is what the k does.

How do I use the constant K function on the TI-30X IIS/B?

On the TI-30X IIS/B, pressing [2nd] [Division] turns on the constant mode and allows the user to define a constant. K appears in the top of the display when the constant mode is on. The [=] key places the contents of K at the end of the expression in the display.

To enter a constant:

1) Press [2nd] [Division]. If a constant is already stored, press [CLEAR] to clear it.
2) Enter a constant (any set of operations, functions, and values).
3) Press [=] to turn on the constant mode. K appears in the display.
4) Press [CLEAR] to clear the display.
5) Enter an initial value. If a value is not entered, 0 is assumed, and "Ans" will appear in the display.
6) Press [=] to place the contents of K at the end of the expression and evaluate it.
7) Continue pressing [=] to repeat the constant.

The result is stored in "Ans", which is displayed, and the constant is used to evaluate the new expression.

Please see the TI-30X IIS/B guidebooksfor additional information.

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Michelle Leonard será eternamente grato(a).
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