Casio, Before starting a calculation, L i ght dark – Casio fx-50F PLUS User Manual
Page 7: Turning on the calculator, Key markings, A adjusting display contrast, A turning off the calculator

E-6
Before starting a calculation...
k
Turning On the Calculator
Press
O. The calculator will enter the calculation mode (page 7) that it was in the last time
you turned it off.
A Adjusting Display Contrast
If the fi gures on the display become hard to read, try adjusting display contrast.
1. Press
!N(SETUP) db(Contrast).
• This will display the contrast adjustment screen.
2. Use
d and e to adjust display contrast.
3. After the setting is the way you want, press
A or !p(EXIT).
Note
You can also use + and - to adjust contrast while the calculation mode menu that
appears when you press the
, key is on the display.
Important!
If adjusting display contrast does not improve display readability, it probably means that
battery power is low. Replace the battery.
A Turning Off the Calculator
Press
!A(OFF).
The following information is retained when you turn off the calculator.
• Calculation modes and setup (page 7)
• Answer Memory (page 19), independent memory (page 21), and variable memory (page
22) contents
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Key Markings
M–
M
DT CL
A
LOGIC
x
!
8
Function
Colors
To perform the function
1
M+
Press the key.
2
M–
Text: Amber
Press
! and then press the key.
3
M
Text: Red
Press
a and then press the key.
4
DT
Text: Blue
In the SD or REG Mode, press the key.
5
CL
Text: Amber
Frame: Blue
In the SD or REG Mode, press
! and then press
the key.
6
∠
Text: Amber
Frame: Purple
In the CMPLX Mode, press
! and then press the
key.
L I GHT DARK
CASIO
L I GHT DARK
CASIO