The Techie Glossary
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Letter
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
2nd |
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LA   
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LAN
stands for Local Area Network. This type of network
architecture is designed for a network
that is in one physical locale. A LAN is a series of computers
that are linked as nodes directly wired
with cables through routers or hubs.
A Wide Area Network is another type of contrasting
network architecture. Laptop
computers
are portable computers that use an LCD display
screen. They are be easily transported
and can come with wireless technology
for connecting to the Internet. Latency
is a delay in a disk drive that is caused
by the rotation of the disk. It is dependent upon the speed of the drive.
This is a normal factor in any rotating drive whether hard
drive, CD, DVD
or floppy drive. Launching
of a service, program
or application is starting it up within
an operating system. This can be done
by double clicking on an icon to the
program or on the command line by typing
the name and pressing the Enter key. Layer
protocol machines
perform the functions of some layers within
a single computer system. Like an OSI
entity within an OSI
network model layer. This is accomplished by accessing the layer entity
below and providing services to the layer entity above at local
service access points. Layers
are
levels of the OSI network model. There
are seven layers in the model, the physical
layer, the data link layer, the network
layer, the transport layer, the
session layer, the presentation
layer and the application layer.
Each layer uses a set of protocols within
the TCP/IP protocol suite for communications.
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LC
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LCD
stands for Liquid
Crystal Display. This is a low power display
that is used in laptop computers and
flat screen monitors.
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Le
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Leased
line
refers to a telecommunications phone
line or fiber-optic cable that is rented for exclusive use. To get the
highest speed data broadband
connections like ISDN or a T1
connection usually requires obtaining a leased
line. DSL and ADSL
usually do not require a leased line. LED
stands for Light Emitting Diode. This miniature device emits light when
charged. There are usually LEDs on the computer
case that may light up when operating system
is writing to the hard
drive.
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Li
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Link
is a term that refers to a hyperlink
on an HTML web
page or web site. By clicking
on a hyperlink the user gets sent to a
new resource usually another web page on the
web as defined by the URL in the link.
Linux
is a widely used open source UNIX-like
operating system. Linux was first released
by its inventor Linus Torvalds in 1991. There are versions of Linux for
almost every available type of computer
hardware from personal
computers to mainframes. With most flavors
of Linux the the inner workings of the open source software is available
for anyone to examine, change and distribute as long as they make their
changes available to the public. This has resulted in a collaboration
of developers working on various aspects of Linux for the adaptation of
Linux for a wide variety of computers platforms.
LISP
is an acronym for LISt Processing. It is a high-level programming
language sometimes used in processing
for artificial intelligence programs that
makes little distinction between data and
the program itself. Little-endian
is a
convention of storage or network transmission
using binary code in which the least
significant byte comes first. The reverse
convention is called big-endian.
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Lo |
Local
to a
user of a system is any device on the current
or local computer system and not a resource
located on system elsewhere on the network.
A local area network is a different use
of the term local referring to a physical location. Local
Area Network
(LAN) is a type of network
architecture designed as one network
for one physical location. It is a series of computers
that are linked together as nodes directly
wired with cables connected by routers or
hubs. A Wide Area
Network is another type of contrasting network architecture. Local
drives
are drives on the current or local
computer system and not one elsewhere on the network.
Whether the drive is a hard drive,
CD drive or floppy
drive. Local
computers
are the ones being used with the current input
devices. A local computer system
is the one in right in front of the user
which is connected directly to the input devices. Not one located elsewhere
on the network. In a client-server
network environment the local computer can
be either a client computer or server
computer. Remote computers are systems
that are not local. Logging
off
is exiting out of the operating
system by the user of the computer.
The user is no longer logged in and cannot perform tasks until they log
back in. On a network a list of who logs
on and off is kept in a record called a log. Logging
on
is accessing the operating system by
the user on the computer.
After the user gets through the login
then the user is logged on to the operating system until that user logs
off. On a network a list of who logs
on and off is kept in a record called a log. Logical
drives
are drives recognized by the operating
system and the file system. A logical
drive can be a single physical drive
or it can a drive created from one physical drive, but partitioned
into multiple logical drives. Usually the physical drive is a local
hard drive. Login
is the act of accessing a computer system.
The login is where the user gives his personal
information to log on to the computer.
The login usually requires the user to provide special input
including a username and password
to gain access. The username is sometimes called the account name. The
username is plainly seen when typed, but the password is blocked from
view with asterisks. Login
name
is the account name or username used to gain
access to a computer system usually
accompanied with a password. The username
is plainly seen when typed, but the password is blocked from view with
asterisks. Logs
are records of events or processes that
have occurred on a computer system.
Usually they are stored in a text file
so that a user or system
administrator can view them easily. Loops
in programming terms are a set of instructions
that never ends usually because there is not a clear exit
out of a conditional programming loop. A loop left in a software
application could lead to a bug.
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