📘 Computer Glossary (J–L)
J
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Java: A popular programming language used for web, mobile, and enterprise apps.
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JavaScript: A scripting language mainly used for interactive web development.
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JPEG (Joint Photographic Experts Group): A common compressed image format.
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Joystick: An input device often used in gaming or simulations.
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JRE (Java Runtime Environment): Software that allows Java applications to run.
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JVM (Java Virtual Machine): A virtual machine that executes Java bytecode.
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JSON (JavaScript Object Notation): A lightweight format for data exchange.
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JTAG (Joint Test Action Group): A standard for testing and debugging electronics.
K
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Kernel: The core of an operating system that manages resources and hardware.
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Keylogger: Malicious software that records keystrokes.
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Keystroke: A single press of a key on a keyboard.
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Kbps (Kilobits per second): A unit for measuring internet speed.
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KDE (K Desktop Environment): A graphical user interface for Linux.
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Keyword: A reserved word in programming languages with special meaning.
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Knowledge Base: A centralized collection of information and solutions.
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Knoppix: A Linux distribution that runs directly from a CD/DVD.
L
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LAN (Local Area Network): A network covering a small area like a home or office.
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Laptop: A portable personal computer.
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Latency: The delay before data starts transferring after a request.
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Linux: An open-source operating system widely used for servers and desktops.
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Load Balancer: A device or software that distributes network traffic across servers.
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Localhost: Refers to the computer you are currently using (127.0.0.1).
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Log File: A file that records system events and activities.
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Login: The process of accessing a computer system with credentials.
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Logic Gate: A basic building block of digital circuits (AND, OR, NOT).
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Loop: A programming structure that repeats instructions until a condition is met.
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Low-Level Language: A programming language close to machine code.
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LPI (Lines Per Inch): A measure of printing resolution.
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LTO (Linear Tape-Open): A magnetic tape storage technology for backups.
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LTE (Long Term Evolution): A standard for high-speed wireless communication.
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LUN (Logical Unit Number): An identifier used in storage systems.