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7. Using the keypad
The keypad is useful to input data and most of the keys on the keypad have more than one function.
Try to input data with the keypad after know how to use it and keep the intimate knowledge like
following tips in your mind.
7.1 Change current character
To change the current input character type, press the <key> key, than you can see the changed
current key type like following steps:
Numeric > Lowercase > Uppercase > Special
Figure4. Changing Current Character
7.2 Inputting the data
Numeric Mode: After making your choice to the Numeric Mode through the<key> key, and just
press from 1 to 10 numeric keys.
Alpha Mode: In alphabetical order, there are 2~3 letters per key.
To input the first letter, press the key you want input one time, and to input the second and third
letter, press the key how many times as the letter is ordered on the key continuously.
Special character: After making your choice to the Special Mode through the<key> key, press the
key that has special character you want to input.
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AT870 User Reference