2 Getting Started
Power On and Off
To turn on your HP 10bII+, press =. To turn the calculator off, press the orange shift key, \, then >. To change the brightness of the display, hold down =and then
simultaneously press 1or A.
Since the calculator has continuous memory, turning it off does not affect the information you have stored. To conserve energy, the calculator turns itself off after five minutes of inactivity.
The calculator uses two CR2032 coin batteries. If you see the 
) in the display, replace the batteries. For more information, refer to the section titled, Installing Batteries in Appendix A.
Manual Conventions and Examples
In this manual, key symbols are used to indicate the key presses used in the example prob- lems. These symbols vary in appearance according to whether they indicate the primary, secondary, or tertiary functions required for the problem. For example, the functions associ-
ated with the equals key, 4, are illustrated in the text as follows:
•primary function (equals): 4
•secondary function (display): \5
•tertiary function (random): ]6
Note the symbol for the primary function of the key, in this case, =, appears on each of the
key symbols depicted above. This repetition is intended to serve as a visual aid. By looking for the symbol of the primary function on the key, you can quickly locate the keys used for the secondary and tertiary functions on the calculator.
Displayed text
Text that appears in the display screen of the calculator is presented in BOLD CAPITAL letters throughout the manual.
Examples
Example problems appear throughout the manual to help illustrate concepts and demonstrate how applications work. Unless otherwise noted, these examples are calculated with CHAIN
set as the active operating mode. To view the current mode, press v]?. The current mode, CHAIN or ALGEBRAIC, will flash, then disappear. To change the mode, press
]followed by ?.
Getting Started 23