BASIC OPERATIONS
77144 Issue 8 August 2009 57
Keypad Functions
The control unit communicates via an array of various keypad and LCD functions.
A brief explanation of these functions is as follows.
CONTROL UNIT,
FUNCTION KEYS
Name & Description
The enter key is used to execute commands like
saving changes to a message or confirming the
selection of certain commands.
The escape key is used when a command or icon
that has been selected is not required or needs to be
cancelled without making further selections.
The delete key is mainly used in the message editor
to erase text, graphics or spaces. It can also be used to
delete characters when entering information into
other menus and functions.
The up shift key can be combined with delete or the
alphanumeric keys, to give greater options for these
keys. For example if used with the alphanumeric keys,
the small green character in the top right corner of the
keys are used.
The down shift key is combined with other keys to
give alternate options with various keys. For example,
when down shift is pressed simultaneously with a
letter key, it will create a lower case character. Rather
than the default upper case.
The cursor keys control the movement of the
flashing cursor block in various option screens, for
example when editing text or setting the clock. They
can also be combined with the shift keys in the
message editor.
The space key is used to add spaces between text and
attributes when editing or creating a new message.
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