Motorola TALKABOUT T2688, User Manual, Page: 61 / 68

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Calculator (8-4)
This function allows you to use your handset as a handy calculator.
Press key to enter this function and a cursor will appear on the upper left
corner of the LCD screen. Enter numbers by pressing numeric keys. To enter
arithmetic symbols, press
key according the chart below:
Key Number/Function Key Number/Function
1 Display result
2 Move the cursor
3 Pressed once +
4 Pressed twice
-
5 Pressed 3 times *
6
+
Pressed 4 times
/
7
Pressed once
.
8 Pressed twice (
9 Pressed 3 times )
0 Cancel
Clear number
For example, to calculate the following formula:
123 x (456+34) / 4 –2
Press
+
(thrice) (twice)
+
(thrice)
+
(4 times) (twice) .
Finally, press key to display the result.