586021
4
Zoom out
Zoom in
Previous page
1/46
Next page
Getting Started
Before using the calculator, slide its hard case
downwards to remove it, and then affix the hard
case to the back of the calculator as shown in the
illustration nearby.
Turning Power On and Off
Press to turn on the calculator. Press
(OFF) to turn off the calculator.
Note: The calculator also will turn off automatically after approximately 10
minutes of non-use. Press the key to turn the calculator back on.
Adjusting Display Contrast
Display the Contrast screen by performing the key operation below:
(SETUP)(Contrast). Next, use and to adjust contrast.
After the setting is the way you want, press .
Important: If adjusting display contrast does not improve display
readability, it probably means that battery power is low. Replace the battery.
Key Markings
Pressing the or 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.
(1) Keycap function (2) Alternate function
This color: Means this:
Yellow
Press and then the key to access the
applicable function.
Red
Press and then the key to input the
applicable variable, constant, function, or
symbol.
Purple (or enclosed in
purple brackets)
Enter the Complex Mode to access the function.
Blue (or enclosed in
blue brackets)
Enter the Base-N Mode to access the function.
Reading the Display
If a or indicator appears on the right side of either the input
expression line or calculation result line, it means the displayed line
continues to the right. Use and to scroll the line display. Note that
if you want to scroll the input expression while both the and
indicators are displayed, you will need to press first and then use
and to scroll.
3
4


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Casio fx-991EX at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Casio fx-991EX in the language / languages: English as an attachment in your email.

The manual is 0,95 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Casio fx-991EX

Casio fx-991EX User Manual - Dutch - 48 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info