User's Guide

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

1. Press .

• This displays the display setup screen.

2. Press .

3. Use and to adjust display contrast.

4. 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

fx-82MS/fx-85MS/fx-300MS/fx-350MS: Pressing the

or key

followed by a second key performs the alternate function of the second

key

fx-220 PLUS: Pressing the

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.