Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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I press ON, then i press the number. My problem is the number not appear on the screen. i spoiled my sister's calculator. help me, please!

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Are you sure the calculator turns on? Try using fresh batteries, or try removing and reinserting the batteries and see if you get the same result.
Do you see anything at all when you turn the calculator on? Try pressing '2nd', then 'QUIT' (MODE) a few times.
Did you do anything that you think might have broken the calculator?

Posted on Mar 30, 2011

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1 Answer

My TI-84 plus silver edition calculator crashed after my little sister held the "2nd" button and then pressed the down arrow key. The screen showed a 4, 3, 2, 1 countdown and then blanked out. I...


If your little sister did as you say, then the logical way to handle the problem is to revert the process.
  1. Press [2nd] button and release it.
  2. Press and HOLD the UpArrow.
  3. As you keep pressing, the top right of the screen will show a series a number, starting with 3 maybe, as you cannot see the 1 or 2, and the display will darken.
  4. Maintain pressure on, till the display is to your liking.

Jun 16, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

Can you please help me on how to calculate mean, median, mode, standard deviation calculation on casio fx-991ms scientific calculator


This will show you how to do statistics (calculate average, standard deviation, regressions etc.) as to the mode and median refer to the definitions.

TO COMPUTE STANDARD DEVIATION AND 2-VAR STATISTICS.

I assume you know the theory. I will show you the key strokes

For 1-Var statistics
Press [MODE][3:STAT] [1:1-VAR]. You are ready to enter values in the X column.
Enter a number and press [=]. Cursor jumps to second number to enter.
Keep entering numbers and pressing [=] till all numbers are in. Press the [=] key after the last one.
Press [AC] key to clear the screen.
Press [SHIFT] [STAT] (above digit 1.) then [5:Var]. Screen displays the statistical variables 1:n ;2: x bar; 3: x sigma n; 4:x sigma n-1.
Press the number corresponding to the statistical value you want, ex 1:n . The variable appears on screen. Press [=] and it will be displayed.
To display another variable press [SHIFT][STAT][5:Var][ 1,2, 3, or 4] .

To access the sum of squares sigma x^2 and the sum of data sigma x press[SHIFT][STAT][4:SUM] then [1: for sigma x^2] or [2: for sigma x]. Press [SHIFT][STAT][6:MinMax] to access minX and maxX.

For 2-var statistics
To perform 2 variable statistics you press [MODE][3:STAT] and any of the other regression options (except 1:1-Var). A two column template opens where you enter the X and Y values. When finished entering data, press [SHIFT][STAT][5:Var]. to access the different statistics. As I assumed above, you should be able to recognize what each variable means.


Apr 19, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

When i turned on my calculator and began typing numbers, the numbers appeared really light on the screen and could barely be seen. what is wrong with my calculator? can it be water damage?


Adjust the screen contrast. Turn the calculator on. Press and release the 2nd key, then press and hold the up-arrow key until the numbers darken. If you go too far, repeat the process with the 2nd and down-arrow keys.

Mar 22, 2011 | Texas Instruments TI-86 Calculator

1 Answer

The problem is 5.00x10^9 / 32.065 = my answer appears as 155,933,260.6 i want to set my calculator to giv my answer as 1.559x10^8 please help.


Press MODE until the setting screen showing "Fix Sci Norm" appears. Press 2 to select scientific notation, then select the number of digits you want after the decimal point.

Nov 04, 2010 | HP 10s Scientific Calculator

1 Answer

I borrowed this calculator from my sister for my daughter to use at school until I could get her one of her own. She told me I needed to replace the batteries which I have with two different new sets and...


TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

If this doesn't do the trick, please append a comment and we'll go from there.

Aug 10, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

What do i key in for 2 to power of 12??


Hello,
Between the x`squared key and the log key there is a key with an x with a raised small figure of a solid square. That is the key you use to enter arbitrary exponents.
  1. If calculator is in MathIO ( a Math indicator appears on the upper band of the screen), enter the base of the power (here 2). A number 2 with a raised empty square appears.The cursor will blink in the raised square. Enter there the exponent (here 12) and press [=]. Result 4096 appears at the bottom of the screen.
  2. If in LineIO (no Math indicator appears on the narrow band at the top of the screen), press 2 and then the key I talked about above. On the screen a number 2 appears with a hat and a left parenthesis. Type in the exponent (here 12) , the right parenthesis and press [=]. The calculator should display 4096.000...
Hope it helps

Nov 17, 2009 | Casio fx-300ES Calculator

1 Answer

I want to know how to key in to calculate 2 to the twelveth power to get anser.


Hello,
You should specify your calculator and avoid posting the same question multiple times.)
Here is the solution for FX-300ES

Between the x`squared key and the log key there is a key with an x with a raised small figure of a solid square. That is the key you use to enter arbitrary exponents.
  1. If calculator is in MathIO ( a Math indicator appears on the upper band of the screen), enter the base of the power (here 2). A number 2 with a raised empty square appears.The cursor will blink in the raised square. Enter there the exponent (here 12) and press [=]. Result 4096 appears at the bottom of the screen.
  2. If in LineIO (no Math indicator appears on the narrow band at the top of the screen), press 2 and then the key I talked about above. On the screen a number 2 appears with a hat and a left parenthesis. Type in the exponent (here 12) , the right parenthesis and press [=]. The calculator should display 4096.000...
Hope it helps

Nov 17, 2009 | Office Equipment & Supplies

2 Answers

2 to the twelve power equals what


Hello,
Between the x`squared key and the log key there is a key with an x with a raised small figure of a solid square. That is the key you use to enter arbitrary exponents.
  1. If calculator is in MathIO ( a Math indicator appears on the upper band of the screen), enter the base of the power (here 2). A number 2 with a raised empty square appears.The cursor will blink in the raised square. Enter there the exponent (here 12) and press [=]. Result 4096 appears at the bottom of the screen.
  2. If in LineIO (no Math indicator appears on the narrow band at the top of the screen), press 2 and then the key I talked about above. On the screen a number 2 appears with a hat and a left parenthesis. Type in the exponent (here 12) , the right parenthesis and press [=]. The calculator should display 4096.000...
In the exemples above I used 2^12. But you can enter any base (2, 3, 5.5, 16/47, ) and any exponent ( 12, 13/48, 0.007654, even negative values).
Hope it helps

Nov 17, 2009 | Casio Office Equipment & Supplies

1 Answer

How do i make the numbers on the screen appear darker?


Hello,
Turn calculator [ON]. Press [SHIFT][MODE] (Setup). Press the Down Arrow once. You see the option [6:<-CONT->]. That is the option that changes the contrast of the display screen. By pressing the [Right Arrow] several times, you darken the screen. By pressing the left arrow you lighten the screen.
Hope it helps.

Oct 13, 2009 | Casio FX-115ES Scientific Calculator

1 Answer

ON switch


Hello,
.The selft tests will show you what is wrong, and if the calculator requires repairs.

You can reset the calculator:

Turn the back of the calculator towards you. Extract the top left rubber pad on the back of the calculator and use a paper clip to press the Reset button. If that does not restore the calculator to health, you should perform the dagnostic tests.

The following procedure valid for the 48G should work for the HP48GX.
Make the calculator perform a
Self test.
  1. Turn calculator on
  2. Press and HOLD the key [ON]
  3. Press and release the key with "E" to its right (the one before last in first row)
  4. Relaese the [ON] key.
It tests the RAM and ROM. You will see various patterns on screen. Afterwards you should see
IROM OK,
IRAM OK,
HP48GX OK
The self test will continue repeatedly until you perform a
System Halt
  1. Press and HOLD the [ON] key
  2. Press and release the "C" key
  3. Release the [ON] key.
The empty stack should appear.

If you do not see IROM OK and IRAM OK, the calculator requires service.

If the above procedure is successful, you may want
to test the keyboard.
  1. Turn calculator on
  2. Press and HOLD the [ON] key
  3. Press and release the "D" key.
  4. Release the [ON] key
  5. Press and release the "E" key. KBD 1 should appear on the top left corner of the screen.
  6. Starting at the upper left corner of the keyboard, and moving Left to right, press every key in sequence. If you follow the sequence and the keys are functioning properly you should hear a hight pitch sound at each press.
  7. If everything is OK, when you press the last key (+) the screen displays KBD 1 OK.
To exit the keyboard test proceed as described above under System Halt.

If you follow the proper sequence and a hexadecimal number appears after pressing a key, the calculator requires service.
Hope it helps.

Jul 01, 2008 | HP 48gx Calculator

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