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4
GENERAL FEATURES AND CHARACTERISTICS
MULTIFUNCTIONAL KEYPAD
Figure 3. Keypad Features
ITEM
NO
KEY NAME DESCRIPTION
1
ALPHA()
The toggle key for Alphabet/Numeral input.
When the system is in alpha-mode, a small icon will be shown in the lower right
corner of the display. Each numeric key can be used to generate one of the
three capital letters located on that number key. For example, number 2 can be
used to produce A, B, or C. Pressing the same key twice within one second, will
produce the letter B. Pressing the same key without halting longer than one
second will allow the user to toggle through the three letters. When the key
has been depressed for longer than one second or another key has been
pressed, the unit will send the real key code to the application program.
2
ALPHANUMERIC
Alphanumeric. These 10 keys can be used for either alpha characters or
numerical input. (See Item 8 for further description of key operation)
3
ARROW
Arrow. The four arrow keys located below the Scan key are used to toggle up
and down between menu selections.
4
ESC
Escape. This key is used to stop and exit current operation.
5
SCAN
Scan a bar code. Pressing this button will trigger the scanner to read a bar
code.
6
ENTER
Enter. There are two enter keys on the side of the scan key. Normally the enter
keys are used for command execution or input confirmation.
7
BS
Back Space. This key can be used to toggle back one space or if pressed
down longer than one second, a clear code will be sent.
8
FUNCTION(FN)
The function key.
This key cannot be activated alone; it must be pressed with one of the numeric
keys at the same time. For example, FN + 1 generates function #1, FN + 2
generates function #2, etc (up to 9 functions). Also, this key can be combined
with the UP/DOWN arrow keys to adjust the contrast of the LCD. And when this
key is combined with the ENTER key, it will turn ON/OFF the backlight.
9
POWER
Power On/Off. To prevent an accidental power down, it requires about
1.5 seconds of continuous pressing to turn On/Off the power.