Question about Citizen CX80 Scientific Calculator

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My calculator shows 0.00000000 instead of 0 every time. How should I fix it? All the functions works properly, but there are too many zeros for me.

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At the top left of the calculator, you will see a sliding switch that is labeled: DECIMAL A,0,2,4,6,F. Move the indicator to the "0". This will remove all excess zeros. The numbers represent how many decimal places the screen will show. I have the manual for this calculator if you need it. LBrown18062@hotmail.com

Posted on Jan 03, 2011

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1 Answer

The words FIX DEG appear on the screen and I can't get rid of it. It doesn't calculate properly


DEG says that the angle unit is set to degrees. You can change it to RADians, or GRADs. However much you want to get rid of all of them you will always have one of them. Learn to live with them.
FIX says that the decimal displays will always show a fixed number of decimals. You can decide how many you keep. Apparently your calculator is configured not to show any decimal digits: the number of fixed digits is set to zero. Change it to some other number
There are other display formats : Engineering ENG, and Scientific (SCI)
There is another format (possibly 2) called Norm 1 or Norm 2.
Set you calculator to one of the Normal formats.
Press SHIFT MODE to enter (Setup) and configure.
Advice: Learn to use your calculator. The best way to achieve mastery is to look inside the manual whenever you do not understand something.

Dec 06, 2013 | Casio FX-300 Plus Scientific Calculator...

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Sinus function in graph mode is wrong.


What make and model calculator? Can you give us the exact keystrokes you're using?

Apr 18, 2013 | Office Equipment & Supplies

1 Answer

Adds .00 to end of a number


Press 2ndF [FIX] 0 to set the display to show zero digits after the decimal point.

If you need a manual, you may access a copy here.

Oct 21, 2012 | Canon F-502 Calculator

1 Answer

When I type sin(6pi) in my calculator I get: 2x10^ -13 But sin(6pi) is normally 0. The calculator gives the right answer when in degrees: sin(3x360) = 0 How to fix this ?


The sine of 6pi is indeed zero. The calculator works with twelve decimal digits while pi is an irrational number with an infinite number of decimal digits. Thus the calculator cannot actually calculate the sine of 6pi, instead it calculates the sine of 18.8495559215. The sine of that number is close to zero but not quite, about 0.000000000002 which is what the calculator shows. This is a natural consequence of using finite machines to deal with infinite numbers.

In degrees, 3*360 is 1080 exactly and thus the calculator can produce an answer of exactly zero.

You'll notice that the calculator also gives a nonzero result for the sine of 4pi.

The "proper" fix for this is something called "argument reduction." If the argument lies outside the range of 0 to 2pi (or alternatively, the range -pi to pi), add or subtract multiples of 2pi until the argument is inside the range. So in this case, subtract 6pi from 6pi to get zero, then take the sine of that.

Bear in mind that argument reduction won't always work, since it too is limited to twelve-digit arithmetic.

Dec 12, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

The display shows comas and misplaced decimals instead of properly placed decimals. For example 4258.32 reads as 4.258,32. How do I fix this on the HP-12c calculator? Thanks


Press and hold the decimal point key then press and release the ON key to swap the radix marks between US and European modes.

Oct 17, 2010 | HP 12c Calculator

1 Answer

My calculater show 3 zeros all the time, how I can fix that?


Hello,
The presence of the zeros is not a bad thing in itself. It depends on their positions (think of a bank account!) Although I cannot guess why the calculator would display 3 zeros all the time, I will try to help you Fix the number of DECIMAL digits to the standard 2.
Press [f] followed by 2.
Hope it helps.

Oct 31, 2009 | HP 12c Calculator

1 Answer

How do I earase the M2 button that is always on my screen?


Clear the display so that zero shows, then press STO M2 to store zero in the M2 registry. Any time there is a non-zero number stored in M1, M2 or M3, you will see those memories in the display to remind you there's something stored. There is no "clear memory" function on the TI-30XA, you have to store zero in the memory to clear M1, M2 or M3 from the display.

David

Dec 17, 2008 | Texas Instruments TI-30XA Calculator

6 Answers

Can't select multiple equations to graph at the same time.


On the TI-84 there is an application called Transfrm. When active it prevents you from graphing multiple functions at the same time. To fix this, select Transfrm fom the APPS menu (it was at the bottom of mine) and select 1:Uninstall. That should fix the issue

Aug 31, 2007 | Texas Instruments TI-84 Plus Silver...

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