Glossary_87
LED
A Light-Emitting Diode (LED) is a semiconductor device that indicates
the status of a machine.
MAC address
Media Access Control (MAC) address is a unique identifier associated
with a net work adapter. MAC address is a unique 48-bit iden tifier usua lly
written as 12 hexadecimal characters grouped in pairs (e. g., 00-00-0c-
34-11-4e). This address is usually hard-coded into a Network Interface
Card (NIC) by its manufacturer, and used as an aid for routers trying to
locate machines on large networks.
MFP
Multi Function Peripheral (MFP) is an office machine that includes the
following functionality in one physical body, so as to have a printer, a
copier, a fax, a scanne r and etc.
MH
Modified Huffman (MH) is a compression method for decreasing the
amount of data that needs to be transmitted between the fax machines
to transfer the image recommended by ITU-T T.4. MH is a codebook-
based run-length encoding scheme optimized to efficiently compress
white space. As most faxes consist mostly of white space, this
minimizes the transmission time of mo st faxes.
MMR
Modified Modified READ (MMR) is a compression method
recommended by ITU-T T.6.
Modem
A device that modulates a carrier signal to encode digital information,
and also demodulates such a carrier signal to decode transmitted
information.
MR
Modified Read (MR) is a compression method recommended by ITU-T
T.4. MR encodes the first scanned line using MH. The next line is
compared to the first, the differences determined, and then the
differenc es are enc od ed and transm itted.
NetWare
A network operating system developed by Novell, Inc. It initially used
cooperative multitasking to run various services on a PC, and the
network protocols were based on the archetypal Xerox XNS stack.
Today NetWare supports TCP/IP as well as IPX/SPX.
OPC
Organic Photo Conductor (OPC) is a mechanism t hat makes a vir tual
image for print using a laser beam emitted from a laser printer, and it is
usually green or gray colored and a cylinder shaped.
An exposing unit of a drum is slowly worn away by its usage of the
printer, and it should be replaced appropriately since it gets scratches
from grits of a paper.
Originals
The first example of something, such as a document, photograph or text,
etc, which is copied, reproduced or translated to produce others, but
which is not itself copied or derived from something else.
OSI
Open Systems Interconnection (OSI) is a model developed by the
Internatio nal Organization for Standardization (ISO) for communic ations.
OSI offers a standard, modular approach to network design that divides
the required set of complex functions into manageable, self-contained,
functional layers. The layers are, from top to bottom, Application,
Presentation, Session, Transport, Network, Data Link and Physical.
PABX
A private a utomat ic bran ch exchan ge (PABX) is an automatic teleph one
switching s y stem within a private enterprise.
PCL
Printer Command Language (PCL) is a Page Description Language
(PDL) developed by HP as a printer protocol and has become an
indust ry st andard . Origin ally d evelo ped for earl y inkj et pr inters, PCL has
been released in varying levels for thermal, matrix printer, and page
printers.
PDF
Portable Document Format (PDF) is a proprietary file format developed
by Adobe Systems for representing two dimensional documents in a
device independent and resolution independent format.
PostScript
PostScript (PS) is a page description language and programming
langua ge used primaril y in the electronic and de sktop publishin g areas. -
that is run in an interpre ter to gene rate an im age .
Printer Driver
A program used to send co mmands and transf er data from the compu ter
to th e printer.
Print Media
The media like paper, envelopes, labels, and transparencies which can
be used on a printer, a scanner, a fax or, a copier.
PPM
Pages Per Minute (PPM) is a method of measurement for determining
how fast a printer works, meaning the number of pages a printer can
produce in one minute.
PRN file
An interface for a device driver, this allows software to interact with the
device driver using standard input/output system calls, which simplifies
many tasks.
Protocol
A convention or standard that controls or enables the connection,
communication, and data transfer between two computing endpoints.
PS
See PostScript.
PSTN
The Public-Switched Telephone Network (PSTN) is the network of the
world's public circuit-switched telephone networks which, on industrial
premises, is usually routed through the switchboard.
Resolution
The sharpness of an image, measured in Dots Per Inch (DPI). The
higher the dpi, the greater the resolution.
SMB
Server Message Block (SMB) is a network protocol mainly applied to
share files , print ers, se rial ports, and miscellaneous co mmunic ations
between nodes on a network. It also provides an authenticated Inter-
process communication mechanism.
SMTP
Simple Mail Transfer Proto col ( SMTP) is the standa rd for e-mail
transmissions across the Internet. SMTP is a relatively simple, text-
based protocol, where one or more recipients of a message are
specified, and then the message text is transferred. It is a client-server
protocol, where the c lient transmits an emai l message to the server.