Glossary - 3

Decode. To recognize a bar code symbology (e.g., UPC/EAN) and then analyze the content of the specific bar
code scanned.
Decode Algorithm. A decoding scheme that converts pulse widths into data representation of the letters or
numbers encoded within a bar code symbol.
Decryption. Decryption is the decoding and unscrambling of received encrypted data. Also see, Encryption
and Key.
Depth of Field. The range between minimum and maximum distances at which a scanner can read a symbol
with a certain minimum element width.
Device Configuration Package. The Symbol Device Configuration Package provides the Product Reference
Guide (PRG), flash partitions, Terminal Configuration Manager (TCM) and the associated TCM scripts. With
this package hex images that represent flash partitions can be created and downloaded to the wearable
terminal.
Discrete 2 of 5. A binary bar code symbology representing each character by a group of five bars, two of which
are wide. The location of wide bars in the group determines which character is encoded; spaces are
insignificant. Only numeric characters (0 to 9) and START/STOP characters may be encoded.
E
EAN. European Article Number. This European/International version of the UPC provides its own coding format
and symbology standards. Element dimensions are specified metrically. EAN is used primarily in retail.
ENQ (RS-232). ENQ software handshaking is also supported for the data sent to the host.
ESD. Electro-Static Discharge
F
Flash Disk. An additional megabyte of non-volatile memory for storing application and configuration files.
Flash Memory. Flash memory is nonvolatile, semi-permanent storage that can be electronically erased in the
circuit and reprogrammed. Wearable terminals use Flash memory to store the operating system
(ROM-DOS), the terminal emulators, and the Citrix ICA Client for DOS.
File Transfer Protocol (FTP). A TCP/IP application protocol governing file transfer via network or telephone
lines. See TCP/IP.
FTP. See File Transfer Protocol.
Flash Memory. Flash memory is responsible for storing the system firmware and is non-volatile. If the system
power is interrupted the data is not be lost.