Customizing The Calculator - HP 30b - Business Professional Calculator Quick Start Manual

The top line of the screen displays operation status, operator symbols,
annunciators, and abbreviations of the registers, variables, and menu names.
This line is referred to as the top line. In Figure 2, SIN is on the top line. Note
the RPN annunciator to the right of the display, indicating that the calculator's
operating mode is RPN. The bottom line displays numbers you have entered,
or results. This line is referred to as the bottom line.

Customizing the Calculator

Table 1- 1 lists the functions available for customizing the calculator in the
Mode menu, including setting the default language for messages displayed
on screen. To open the Mode menu, press
< >
and , to navigate through the menu. To view the available options
in a menu and change a setting, press
displayed setting is the active setting. To exit the menu, press
Table 1- 1 Customizing the Calculator
Display/
Function
Turn the
calculator on/
off
Display contrast
4 Getting Started
Description
To turn the calculator on, press
:O
. The calculator automatically turns off after
approximately five minutes if not in use.
To adjust the display contrast, press and hold
simultaneously pressing either
+ -
of the or
contrast of the display, respectively.
:u
. Use the arrow keys,
I
with an item displayed. The
O
. To turn it off, press
+
or
key increases or decreases the
O
.
O
while
-
. Each press