Question about Sharp EL-240SB Calculator

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Reset to factory settings

Please can you advise how to reset this calculator so that answers are not rounded up to 0 decimal places.

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Re: Reset to factory settings

Remove battery and return it back this make reset-decimal places can be adjust with decimal switch.

Posted on Mar 10, 2008

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HP 12 C display does not show entire numbers. How do I fix?

If you mean it is not showing everything after the decimal point, you can change that by pressing the [f] key followed by the number of decimal places to display. For example, to restrict it to 2 places, press [f][2]. If you want to see 4 places, press [f][4].

To show all possible decimal places, use the sequence [f][9].
From the manual (
"To display a different number of decimal places, press f followed by a digit key (0 through 9) specifying the number of decimal places. In the following examples, notice how the displayed form of the number inside the calculator - 14.87456320 - is rounded to the specified number of digits."

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The standard display format, plus the specified number of decimal places, remain in effect until you change them; they are not reset each time the calculator is turned on. However, if Continuous Memory is reset, when the calculator is next turned on numbers will be displayed in the standard display format with two decimal places
If a calculated answer is either too small or too large to be displayed in the standard display format, the display format automatically switches to scientific notation. The display returns to the standard display format for all numbers that can be displayed in that format.

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BA II plus gives approximate answer for FV calculations

The 107,186.37 is what the future value would be if the interest per month is 0.58%, which is 6.96% per year. Try the following:
2nd [CLR TVM] 1 2 N 7 I/YR 1 0 0 0 0 0 PV CPT FV
As for rounding, you can change the calculator display to any number of digits (up to a limit, of course) by pressing 2nd [FORMAT] and then a number specifying the number of desired digits after the decimal point or 9 for floating decimal.

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Check if you can see a key carrying normal either in the second function or so.

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I have a problem with my Sharp EL-531WH Scientific Calculator. It rounds off the answer. In my Chemistry class, we need exact answers. For example, an answer of 0.234 must be the answer if that's the...

Press the [SET UP] key, followed by the 0 key to bring up the display menu. You can select "FIX" followed by the number of digits to the right of the decimal point, or press cursor-down and select one of the NORM modes. Press [ON/C] to exit the menu.

Be aware that some numbers cannot be displayed exactly. For example, 1/3 is a 0.3 followed by an infinite number of 3s.

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Is their away to round whole number on a ti30 calculator

To do this you need to set your calculator to a fixed decimal value. You can do this by Pressing 2nd + FIX (decimal point) and then setting it to 0 decimal places. This will round a number to the nearest whole number.
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I want to increase the number of decimal places

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. 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
  1. Press and release the gold PREFIX key (f).
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The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected.

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Sharp el506d calculator has the decimal in the wrong place.

Try pressing the FSE button to switch between Fixed, Scientific, Engineering, and Normal displays. When in Fixed display, you can use <2ndF> < TAB > then enter a number from 0 to 9 to choose the number of decimal places in that display. To reset EVERYTHING to factory defaults: With the calculator off, press and hold these three keys: <2ndF> < ) > < ON/C > then release all three. The calculator will go through a series of tests (it takes a few seconds) and then be at its factory defaults. I have uploaded the manual for this calculator at

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Set the +43210F switch to + (or 2).
On some models it is A43210F, then use A (or 2).
+ mode will let you enter numbers (monetary) without the decimal point and assumes cents; 2 mode will just round to 2 decimals, but you must enter the decimal.

May 05, 2008 | Calculators

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My calculator has a funny format

Try pushing and releasing [f], then [4]. This will give you 4 decimal places. (It follows that if you want 5 decimal places, push 5 instead of 4, etc). If that doesn't work, you can try taking the batteries out and putting them back in which should reset it to 2 decimal places, then set it where you want it following the above.

If it continues to malfunction I suggest taking the batteries out for 24 hours to allow a static discharge. This will lose anything you stored in the calculator, setting it back to how it came from the factory.

Nov 29, 2007 | HP 12c Calculator

2 Answers


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.

Oct 17, 2006 | Canon F-502 Calculator

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