Texas Instruments BA-20 Profit Manager User Manual - Page 6
Selecting 2nd Functions, Reading the Display, Automatic Power Down, Feature
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• 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 standardcalculator 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