Computer/System Terms - L
land grid array (LGA) - (processor connection sockets)
Large Language Model (LLM) - (In the area of Artificial Intelligence (AI), program or function capable of processing large amounts of data.)
laser beam recorder (LBR) - (Device used in CD manufacturing which fires pulses of blue/violet laser light to expose and soften portions of the photoresist layer on the glass master.)
last in, first out (LIFO) - (memory retrieval)
Latin America and Caribbean Network Information (LACNIC) - Center (Regional Internet registry which provides overall management of public IP addresses for the Latin America and Caribbean region.)
Layer 2 Forwarding Protocol (L2F) - (CISCO proprietary system which provides a virtual private network (VPN) service - a technology which provides a secure connection (tunnel) between an organization's internal network and a remote device or network, over an unsecure external network, such as the Internet.)
Layer Jump Recording (LJR) - (DVD recording method)
Layer 2 Tunneling Protocol (L2TP) - (An early virtual private network (VPN) - technology which provides a direct connection between a single computer and faraway local area networks (LANs) over a public connection, such as the Internet - jointly developed by Microsoft and Cisco. Although it has become an Internet standard, it is an encapsulation protocol, which provices transport and data protection services over an untrusted network, but is being replaced by newer VPNs, which provide greater security.)
leadless chip carrier (LCC) - (Early (1984) type of chip processor packaging (sealed container surrounding chips) which involved gold pads (lands) - thin layers of gold - on the bottom edges of the chip which provided a better contact surface and eliminated the need for soldering.)
least significant bit (LSB) - (In the area of steganography (the process of hiding messages in pictures or other media), a method of embedding messages in areas or bits within a file which will not alter the file in a visible manner. A message can be embedded in a graphics (picture) file without being noticed.)
light-emitting diode (LED) - (computer monitor display)
Lightweight Directory Access Protocol (LDAP) - (Protocol which provides directory services, such as user directory, including user name, password, e-mail, and phone number information, to network clients.)
Lightweight Extensible Authentication Protocol (LEAP) - (A proprietary protocol developed by Cisco, used in their wireless LAN devices for authentication.)
like new (LN) - (sale item description)
like new, in box (LNIB) - (sale item description)
line feed (LF) - (printer instruction)
line print terminal (LPT) - (PC connection ports)
Line Printer Daemon protocol (LDP) - (UNIX program controlling line printer activity. A daemon is a program that runs continuously in the background, or is waiting to be activated by a particular event.)
linear resonate actuator (LRA) - (Smartphone vibrator)
lines per inch (LPI) - (print resolution measure)
Link Control Protocol (LCP) - (A protocol within a Point-to-Point Protocol (PPP) that establishes, configures, and maintains the network connection - carries out packet encapsulation format options, handles various limits on packet size, and terminates a link when necessary.)
Link Layer Topology Discoverer (LLTD) - (Windows network mapping)
link manager (LM) - (Bluetooth software)
Linux, Apache, MySQL, Python (LAMP) - (Term for a group of open-source software applications that can be used in developing a Web server.)
Linus UNIX (Linux) - (operating system)
liquid crystal display (LCD) - (Type of computer/device video display monitor screen which uses liquid-crystal cells containing chemicals whose response to polarized light can be controlled by an electric field to produce changes in the screen.)
List Processor (Lisp) - (programming language)
Lithium-ion (Li-ion) - (rechargeable batteries)
Local Area Network (LAN) - (A network (connected devices and systems) that provides shared communication and resources in a relatively small area.)
Local Area Network Manager (LANMAN) - (Early proprietary authentication protocol developed by Windows and included in Microsoft Windows NT. Because of security weaknesses, it was disabled by default starting with Windows Vista.)
Local Internet Registries (LIRs) -
Local Security Authority (LSA) - (Windows logon sessions)
local shared objects (LSOs) - (flash cookies)
logical block address (LBA) - (Method of addressing (or numbering) each sector on an ATA (Advanced Technology Attachment) drive - the interface used to connect disk drives to a PC - using a single number to address each sector.)
logical cylinder head sector (L-CHS) - (Capability of tracking disk location addresses using a logical cylinder head sector"translation" process at the BIOS (Basic input/output system) level, without renumbering the original location, allowing the operating systme to talk to the disk drive when it issues commands.)
Logical Disk Manager database (LDM) - (Windows utility which maintains and organizes the data storage database.)
Logical Link Control (LLC) - (In the Open Systems Interconnection (OSI) reference model, a data link layer process which provides message information about the data packets/frames being sent and synchronizes transmissions, so that senders/receivers know when a frame is being sent and when it should be received.)
Long-Term Evolution (LTE) - (Mobile/4G)
low frequency effect (LFE) - (sound channels)
Low Hanging Fruit (LHF) - (In the context of cryptography, passwords for system access, which are easily guessed or commonly used. Term often used in a general sense for the most easily accomplished goals.)
low insertion force (LIF) - (processor sockets)
low-level formatting (LLF) - (disk formatting)
Low Orbit Ion Cannon (LOIC) -
Low Profile X (LPX) - (obsolete motherboard design)
Logical (or High-level logical) formatting (HLF) - (Type of hard disk formatting done by the operating system (OS) which involves the creation of a table of contents for managing files and data on the disk. Low-level, or physical, formatting, involves changes to the disk done at the factory during manufacture.)