Question about HP 48gx Calculator

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Non functional keys

The math operator keys suddenly stopped working (+ - * / )

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Hi please click on this link and select the symptoms according to the problem you are facing

http://h10025.www1.hp.com/ewfrf/wc/solveCategory?lc=en&cc=us&lang=en&dlc=en&product=58443

Posted on Jun 10, 2008

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The contacts might be bad or battery too low. If you have a reset button on it try pressing it.

Posted on Jun 10, 2008

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Have you changed the battery?

Posted on Jun 10, 2008

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Posted on Jan 02, 2017

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1 Answer

Key working alpha


The alpha key activates the alphabet keyboard and a few extra symbols. To access the MATH menu and the ToFrac command, press the key below the ALPHA key. The key is marked with MATH.
On the TI84PLUS with the newer operating systems (version2.5x), the APLHA key opens up a few functionalities. That is not available on the TI 83Plus.

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Hp notebook not working?


Scan for Viruses

Sudden, unexplained computer issues are commonly caused by a virus infestation. These sneaky programs secretly install themselves on your system and alter the way the machine functions and responds to commands. Eliminate any hidden malicious programs by running a deep scan to find and destroy unwanted programs. You may need to perform a restore or recovery action on your system afterward to replace corrupted files with the correct versions.
Troubleshooting

To determine whether your non-functioning F5 key is due to a software issue or faulty hardware, connect a separate keyboard to your Pavilion. If the F5 key works on the external keyboard, the problem with your Pavilion's F5 key could be physical, such as a dirty key or spilled liquid. If the F5 key does not work on the external keyboard either, the problem likely lies in the software. Make sure that your operating system files are up-to-date to encourage proper communication between the keyboard and motherboard.

Thorough Cleaning

A keyboard key can become non-functional if it cannot make contact with the proper sensor beneath it, such as from accumulated debris or a spilled liquid. Dust, hair and lint can collect beneath and between your Pavilion's keys, which can interfere with proper contact when the layer becomes too thick. Sticky residue left behind by sugary liquids, such as soda or juice, can cause the key to stick, preventing the computer from registering the press. Thoroughly clean the area beneath the F5 key by gently prying the key off and using a cotton swab and rubbing alcohol to remove any dirt or residue.
Safe Mode

When you start your Pavilion, numerous other programs automatically start with it. Any of these programs could cause the F5 key to become non-responsive. Starting the Pavilion in Safe Mode will load only the essential operating system files and drivers, and if the F5 key works while in this mode, your problem most likely lies with an installed program or hardware device. To enter Safe Mode, restart your laptop and press the F8 key immediately. You'll enter the "Advanced Boot Options" menu, where you can use your arrow keys to select "Safe Mode" and press "Enter." If your F5 key still does not work, you may have a problem with your operating system files.

Jan 10, 2013 | HP Pavilion dv1000 Notebook

1 Answer

I have an asus k40ij and the hot key functions just suddenly stopped working. (Fn key) How do I get it to work again?


reinstaling you operating system is one way of recovering these functions ,,make sure you are using a compatable os version and be wary to choose the correct options when installing at start-up point.

Jul 18, 2011 | ASUS Computers & Internet

1 Answer

Need to know how to operate the multiple or combination keys functions. For example the J key also has a 1 on it...How do I operate this key using the small number...I need it for math to...


Hello
To use multi functioned keys, you may use following combinations
1. Normal press, just present the the big function written on screen 2. Shift+Key, gives the second function of the key 3. Num Lock on, Gives the numbers written on the key like J gives 1 and so on 4. Fn+Key with Fn color function written on the F1 to F12 keys
Hope this helps

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1 Answer

What are the parts of casio calculator


LBrown18062@hotmail.com My manual is 75 pages. I can email it to you. Please put Casio FX-115ES as the subject. Awaiting your response.

fx-115ES User's Guide
About this Manual
• The MATH mark indicates an example that uses Math format,
while the LINE mark indicates Linear format. For details about
input/output formats, see "Specifying the Input/Output Format".
• Keycap markings indicate what a key inputs or what function it
performs.
Example: 1, 2, +, -, !, A, etc.
• Pressing the 1 or S key followed by a second key performs
the alternate function of the second key. The alternate function is
indicated by the text printed above the key.
• The following shows what the different colors of the alternate
function key text mean.
If key marking
text is this color: It means this:
Yellow
Press 1 and then the key to access
the applicable function.
Red
Press S and then the key to input the
applicable variable, constant, or symbol.
Purple (or enclosed Enter the CMPLX Mode to access the
in purple brackets) function.
Green (or enclosed Enter the BASE-N Mode to access the
in green brackets) function.
• The following shows an example of how an alternate function
operation is represented in this User's Guide.
Example:1s(sin-1)1=
Indicates the function that is accessed by the key
operation (1s) before it. Note that this is not part
of the actual key operation you perform.
sin-1{D}
Keycap function s
Alternate function

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

1 Answer

F keys suddenly not working


The "F mode" button toggles on and off the F keys. If you press it (accidentally) as I did, the keys will no longer function.

Simply press the "F mode" key again (it is directly above the "End->" key between F12 and Insert on this model keyboard) and functionality will be restored.

Apr 08, 2009 | Logitech Computers & Internet

1 Answer

The keypad do not work


Either a software re flash may help or a keypad replacement. Usually facial moisture could be a cause of this. i would recommend trying a blow dryer on the keypad for 40 seconds with out the battery to see if that fixes the problem

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