HP 20B User's Manual | Page 7
Welcome to the HP 20b Financial Calculator
This manual is designed to familiarize you with the many features of your new 20b Financial Calculator. It includes menu
maps, example problems and solutions with key presses, screen shots, and examples of cash flow diagrams. There are also
sections which list the error messages and explain how RPN works. Refer to the section titled,
Contents for quick access to
various topics. If you need more information about your calculator, or about calculator operation and features, please refer to
the training materials available at: www.hp.com/go/calctraining.
Turning the Calculator On and Off
To turn on your calculator, press
O. To turn it off, press :a.
Turning the calculator off does not erase any data. The calculator automatically turns itself off after approximately five minutes
to conserve energy. If you see the low battery symbol () in the display, replace the batteries. See Chapter 12
Regulatory, and Contact Information for instructions on replacing the batteries.
Selecting a Language
English is the default language for messages displayed on the screen. To select a language other than English:
:u to access the Mode menu. FIX displays on the top line of the screen.
< repeatedly until English displays on the screen.
I until the desired language is displayed. The displayed language is the active setting.
O to return to the default calculator screen.
For more information on accessing menus and changing calculator settings, refer to the sections below titled,
Menu: Setting Preferences, and Accessing Menus and Menu Maps.
Adjusting the Display Contrast
To adjust the contrast of the display, press and hold
O while pressing the + or - keys. Each press of the + or
- keys slightly increases or decreases the contrast of the display.
When you enter a number, the cursor (_) blinks in the display and indicates you are in
number entry mode.
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