Question about Sharp el-531x scientific calculator

There's a a "P" next to the "0" when I press the "On" button and I cannot input any number above 4 or do and some functions such as log do not work.

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Posted on Jan 02, 2017

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SOURCE: Nothing happens when I press a number??

Hello,

There is no lock button. Calculator may be configured to be in computational mode you are not familiar with: It may be set to do base calculation on base 5, hence the p (pental). Press the reset button on the back, and the default configuraion will be restored.

You should give some time to learn the different mode of calculations.

Hope it helps.

Posted on Sep 20, 2009

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Press the MODE key. and press 4 for MATRIX.

To enter a matrix press the MATH button and choose 2 for EDIT. Determine the size of your matrix by typing in the row x column value (maximum 4). Then press =. Type in the values in your matrix. After each value press = to move to the next part of the table. Once your matrix is complete press ON and then the MATH button. This time choose 4 for STORE. Select the matrix name you would like to store your matrix in - for example choose 0 for matA. Now press MATH and press the down arrow key once. Select 6 for CALC and choose 0 for det (determinant). Then input the matrix you want the determinant of by pressing MATH and 1 for MATRIX. Select the matrix you would like to work with eg, matA and press then press =.

To enter a matrix press the MATH button and choose 2 for EDIT. Determine the size of your matrix by typing in the row x column value (maximum 4). Then press =. Type in the values in your matrix. After each value press = to move to the next part of the table. Once your matrix is complete press ON and then the MATH button. This time choose 4 for STORE. Select the matrix name you would like to store your matrix in - for example choose 0 for matA. Now press MATH and press the down arrow key once. Select 6 for CALC and choose 0 for det (determinant). Then input the matrix you want the determinant of by pressing MATH and 1 for MATRIX. Select the matrix you would like to work with eg, matA and press then press =.

Aug 22, 2012 | Sharp ELW516 Scientific Calculator

Your calculator is set to do arithmetics in base 5 (PENTAL), that is why the numbers are displayed with a small p. The only number keys that work are 0,1,2,3,and 4. Number 5 is represented as 10p and 6 is 5 (10)+1=11p.

To revert to the decimal numeration, press the [2ndF ] key followed by [+].

To revert to the decimal numeration, press the [2ndF ] key followed by [+].

Jan 10, 2012 | Office Equipment & Supplies

Non-printing models (also applies to HR-8TE printing calculator):

1. Press [AC]

2. Hold [SET/%] key for about 2 seconds

3. Press [TAX+]

4. Input the tax rate

5. Press [SET/%]

Printing models (except HR-8TE):

1. Have calculator in "print" mode

2. Press [CA]

3. Hold [SET/%] key for about 3 seconds

4. Input the tax rate

5. Press [TAX+]

6. Press [SET/%]

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Enter only the numerals, not the letters.

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The attached chart shows comparisons of the different calculator models. This includes graphing, scientific and printing calculators. download the chart here

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The HR-8TE/HR-8TM have a [DEC] key with F, 0, 2, and 5/4 over it, while many other calculators models have a switch labeled [F CUT 5/4].

The button or switch can control rounding off to a certain number of decimal places. F is floating point (no F indicator on screen), 0 rounds off to 0 places after decimal point, and 2 rounds off to 2 places after decimal point.

The 5/4 applies to either the 0 or 2 modes, and describes the type of rounding off that is performed. The calculator will round down if the digit after the one you are rounding to is 4 or lower, and round up if the digit is 5 or higher.

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This switch is used to determine how many decimal places your answer is displayed in.

ADD (2) is often used for monetary calculations, so that it is not necessary to enter the decimal point. It is automatically placed two decimal places from the end for cents. For example, entering 123 will display as 1.23.

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This is a markup on price procedure. The formula is as follows:

Markup%=(Markup Price-Cost)/(Markup Price)

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Make sure that you are following the correct procedure.

Adding 10%: 200 [×] 10 [%] [+]

Subtract 10%: 200 [×] 10 [%] [-]

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AP Calculus requires a graphing calculator.

Any graphing or scientific calculator is permitted on the following as long as it does not have a QWERTY keyboard, electronic writing pad or a pen-input/stylus-driven interface:

PSAT/NMSQT, SAT I

SAT II Math, IC & IIC

AP Statistics (graphing expected)

AP Chemistry

AP Physics

May 27, 2011 | Casio Parts Cash Register PC Desktop

Sounds like the keyboard is in NUM LOCK mode

They keys map like this:

7 8 9 = 7 8 9

u i o = 4 5 6

j k l = 1 2 3

0 . = m .

Look for the NUM LOCK key on your keyboard.

Typically, you press the FN key (lower left corner) and the NUM LOCK key (typically towards the upper right) together to put the keyboard back into regular mode.

They keys map like this:

7 8 9 = 7 8 9

u i o = 4 5 6

j k l = 1 2 3

0 . = m .

Look for the NUM LOCK key on your keyboard.

Typically, you press the FN key (lower left corner) and the NUM LOCK key (typically towards the upper right) together to put the keyboard back into regular mode.

Apr 21, 2011 | Twinhead DURABOOK N15RB Notebook

Press [math] [0] to put the calculator into equation solver. Then you input your equation in 0 = format. So, the equation x/3 - 1/5 = 4/3 would be input as 0 = x/3 - 1/5 - 4/3 . Then press [enter] .

Apr 05, 2011 | Texas Instruments TI-84 Plus Calculator

Use the "x^y" button (above "DEL" button; next to ")" button). For your problem above, enter 10 then "x^y" then 5.5 and press "Ans" button.

Mar 09, 2011 | Sentry CA 756 Calculator

To input radical numbers, you need to press the 2nd key and then the x^2 which has the square root symbol in blue above it. Input the numbers of the first radical. Hit the ) button. Then press the multiplication button. Hit the radical button again. Input the numbers of the second radical. Press the ) button again and press enter.

Feb 10, 2011 | Texas Instruments TI-84 Plus Silver...

Hi....by looking at the date you posted this question, you may have already found the answer, but just in case you haven't......the procedure for adding and subtracting on these calculators is completely opposite of a regular calculator. On a regular calculator, you would input 4 - 4 = 0. On these type of calculators, a number's positive or negative status is keyed in AFTER the number, instead of before it. Therefore, you input 4 + 4 - (notice you DO NOT input = at the end, but if you are in print mode, you will need to hit your total key, which looks like an asterisk, where the = would normally be, in order for the final value of your calculations to print on the paper tape.

Multiplication and division equations are done exactly as they are on a regular calculator....4 x 4 = 16.

Hope this helps. If you have your owners manual, it should also give you some examples of how to perform calculations with your calculator.

Multiplication and division equations are done exactly as they are on a regular calculator....4 x 4 = 16.

Hope this helps. If you have your owners manual, it should also give you some examples of how to perform calculations with your calculator.

Dec 11, 2008 | Canon P170-DH Calculator

As I added on to the previous solution on the other problem.

"Okay, I did what the best solution did and worked with it.

"1. press 2nd F (left top corner)

2. ENG/FIX (the button next to 2nd F)

3. press 0 (if you don't want calculator to round off any decimals)"

In order to get your exact value of pi, in step #3, instead of 0, press the decimal [ . ]

This should give you no decimals when entering a number and give you 3.141592654... when you input pi.

Hope that works/helps."

"Okay, I did what the best solution did and worked with it.

"1. press 2nd F (left top corner)

2. ENG/FIX (the button next to 2nd F)

3. press 0 (if you don't want calculator to round off any decimals)"

In order to get your exact value of pi, in step #3, instead of 0, press the decimal [ . ]

This should give you no decimals when entering a number and give you 3.141592654... when you input pi.

Hope that works/helps."

Nov 05, 2007 | Canon F-502 Calculator

Okay, I did what the best solution did and worked with it.

"1. press 2nd F (left top corner)

2. ENG/FIX (the button next to 2nd F)

3. press 0 (if you don't want calculator to round off any decimals)"

In order to get your exact value of pi, in step #3, instead of 0, press the decimal [ . ]

This should give you no decimals when entering a number and give you 3.141592654... when you input pi.

Hope that works/helps.

"1. press 2nd F (left top corner)

2. ENG/FIX (the button next to 2nd F)

3. press 0 (if you don't want calculator to round off any decimals)"

In order to get your exact value of pi, in step #3, instead of 0, press the decimal [ . ]

This should give you no decimals when entering a number and give you 3.141592654... when you input pi.

Hope that works/helps.

Oct 17, 2006 | Canon F-502 Calculator

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