Selecting 2Nd Functions; Reading The Display - Texas Instruments BA II PLUS User Manual

• The Constant Memory™ feature retains all worksheet values and
settings, including the contents of the 10 memories and all format
settings.
Automatic Power Down™ (APD™) Feature
To prolong battery life, the Automatic Power Down (APD) feature turns
off the calculator automatically after about five minutes of inactivity.
The next time you press $, the calculator turns on exactly as you left
it, saving display settings and stored memory and any pending
operations or error conditions.

Selecting 2nd Functions

The primary function of a key is printed on the key itself.
For example, the primary function of the $ key is to
turn on or turn off the calculator.
Most keys include a second function printed above the key.
To select a second function, press & and the
corresponding key. (When you press &, the 2nd indicator
appears in the upper left corner of the display.)
For example, pressing & U exits the selected
worksheet and returns the calculator to the standard-
calculator mode.
Note: To cancel after pressing &, press & again.

Reading the Display

The display shows the selected variable labels with values up to 10 digits.
(The calculator displays values exceeding 10 digits in scientific notation.)
2 Overview of Calculator Operations