Using The Ibm Ultrabay Plus Numeric Keypad; Using The Calculator Function - IBM ThinkPad Ultrabay User Manual

Using the IBM Ultrabay Plus Numeric Keypad

If the Num Lock status indicated on the icon does not match your expected
input, or the Num Lock indicator on the keyboard is turned on when the
Numeric Keypad is plugged in; please depress the Num Lock key (Shift +
Scroll Lock) to adjust and correct.

Using the calculator function

The IBM ThinkPad Ultrabay Plus Numeric Keypad has a calculator feature. To
use the calculator feature, press the [image of the calculator button?]. The
Microsoft calculator opens. Use the Numeric Keypad to operate the Microsoft
calculator.
You can also use the Numeric Keypad to type calculations into a spreadsheet
or database program, while using the alphanumeric keyboard on your
ThinkPad computer.
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IBM ThinkPad Ultrabay Plus Numeric Keypad: User's Guide