Symbol Technologies MC50 - Manual (Page 85)

Glossary GL-5
DHCP (Dynamic Host Configuration Protocol) Software that automatically
assigns IP addresses to client stations logging onto a TCP/IP
network. Similar to BOOTP, but also permits the leasing of an IP
address. It eliminates having to manually assign permanent IP
addresses. DHCP software typically runs in servers and is also
found in network devices such as routers that allow multiple users
access to the Internet.
DHCP Server A server in the network or a service within a server that assigns IP
addresses.
Discrete Code A bar code or symbol in which the spaces between characters
(intercharacter gaps) are not part of the code.
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.
DNS Server The Control Panel allows you to set the IP address for a DNS Server,
if used. This allows users to use server names, rather than IP
addresses. It is set on the Network tab of the Control Panel.
Domain Name The Control Panel allows you to set a Domain Name for the DNS
Server, if used (e.g., symbol.com). It is set on the Network tab of the
Control Panel.
DOS Disk Operating System. This is basic software that allows you to
load and use software applications on your computer. Also see
NetID.
DRAM Dynamic random access memory.
DTE See Data Terminal Equipment.
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.
Element Generic term for a bar or space.
Encoded Area Total linear dimension occupied by all characters of a code pattern,
including start/stop characters and data.
ENQ (RS-232) ENQ software handshaking is also supported for the data sent to
the host.
Encryption Encryption is the scrambling and coding of data, typically using
mathematical formulas called algorithms, before information is
transmitted over any communications link or network. A key is the
specific code used by the algorithm to encrypt or decrypt the data.
Also see, Decryption and Key.
ESD Electro-Static Discharge
ESN Electronic Serial Number. The unique hardware number associated
with a cellular device, which is transmitted to the system when the
device communicates with the cellular system.