Casio fx-CG50 User manual

Key Layout and Markings ................................... 2
Switching On...................................................... 3
Status Bar – Hardware ....................................... 4
Changing Hardware Settings .............................. 5
Status Bar – Maths Settings ............................... 6
If results don’t display as you expect ….............. 7
Memory Reset .................................................... 8
Reset Options .................................................... 9
Installing Operating System Updates ................ 10
Downloading Add-In Applications ..................... 11
Examination Mode............................................ 12
v3.0
fx-CG50
Setting Up
Guide

2
Key Layout and Markings
Many of the calculator’s keys are used to perform more than one function.
The functions marked on the keyboard are colour-coded.
Press Land the button to access the yellow function.
Press aand the key to access the red function.
afunction
Lfunction
key function

3
Switching On
• Press O.
• The calculator will show the Main Menu unless it has been switched o whilst in one of the menu options.
• If the Main Menu does not appear, press p.
• Your menu may not have all of the icons below
> please see “Installing Operating System Updates” and “Downloading Add-In Applications” on pages 10-11.
• For instructions on how to use each menu, please see the Getting Started guide.

4
Status Bar – Hardware
The status bar is an area that displays messages and the current status of the calculator.
It is always displayed at the top of the screen.
This icon Indicates this
The current battery level.
The icons indicated (from left to right): Level 3, Level 2, Level 1, Dead.
Calculation in progress.
Lkey was pressed and the calculator is standing by for the next key operation.
akey was pressed and the calculator is standing by for the next key operation.
The icon indicates the lower-case input (eActivity and Program modes only).
Alpha Lock is in eect.
L8 (CLIP) was pressed and the calculator is standing by for range specication.

5
Changing Hardware Settings
• From the Main Menu, scroll down to System
• Press l(bottom right hand corner).
• Press qfor “Display Settings” which adjusts the Backlight Level
> it is best to set it to 3 for battery conservation, 4 or 5 if you
have diculty seeing the screen
> press dto come out of the menu.
• Press w for “Power Properties” to adjust Auto Power O duration and the Backlight Duration
> press dto come out of the menu.
• Press efor “Language”
> English is at the top
> press q(SELECT) then dtwice to return to the System Manager menu.
• Press pto return to the Main Menu.

6
Status Bar – Maths Settings
The calculator can be set up for a variety of mathematical defaults.
For more information on setup, please see the Getting Started guide.
This icon Indicates this Use this Setup setting
Maths format Input/Output
Angle unit Angle
Rounding format Display
Fraction format Frac Result
Real and complex number format Complex Mode

7
If results don’t display as you expect …
If you keep having problems when you are trying to perform operations, try the following before assuming that there
is something wrong with the calculator.
1. Check your settings, especially angle unit and rounding – see page 6.
2. Check your input. Have you used the correct symbol such as -or n, for ?
3. For graphs, check your V-Window settings.
4. For graphs, check there are no functions that you cannot see lower down the input screen that could be causing problems.
5. Perform a memory reset – see page 8.
6. There is a full list of error messages, and what causes the error, in the Appendix of the manual.

8
Memory Reset
1. Press pto choose the Main Menu screen if you are not already there.
2. Scroll down to System
3. Press l (bottom right hand corner).
4. System Manager menu appears – press yfor RESET.
5. Then press wfor MAIN (memory). This deletes everything you have entered but not saved.
6. Message asks “Reset OK? Main Memory”. Press qfor Yes.
7. Message says “Reset! Main Memory”. Press dtwice then pto return to the Main Menu.

9
Reset Options
Key Initialise Default
Parameters
Delete Main
Memory
Delete Add-Ins1Delete Add-In
Languages
Delete Stored
Data
q(SETUP) 
w(MAIN)  
e(ADD-IN) 
r(STRGMEM) 
y(A&S)  
u()q(M&S)   
u()w(ALL) 
u()e(LANGUAGE) 
u()r(RESET1)   ()2 
1 Add-Ins are Modes in the Main Menu that appear after Python (or System for OS 3.11 and earlier).
2 Some Add-Ins are deleted. For details please see https://edu.casio.com/products/graphic/cgreset/
From the Main Menu, choose System , then choose y(RESET).

10
Installing Operating System Updates
• Download the latest OS from the OS & Files section of https://education.casio.co.uk
• The OS update le is a program
> you may need administrator permissions to run it.
• Do not connect the calculator to the PC until instructed to do so
> this is a frequent cause of the update failing.
• Launch the update program on your PC/Mac
> do not copy it to the calculator.
• The update program will show you instructions
> please follow these instructions exactly.
• At the end of the update, you may still be missing some Add-Ins if these were not previously installed
> please see page 11 on how to install these Add-Ins.
• In the very unlikely event that the update fails, you will receive a message
> check the battery indicator has at least 2 bars (is not red)
> follow the instructions on the last page of the update installation guide.