Computer Glossary (J–L)

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📘 Computer Glossary (J–L)

J

  • Java: A popular programming language used for web, mobile, and enterprise apps.

  • JavaScript: A scripting language mainly used for interactive web development.

  • JPEG (Joint Photographic Experts Group): A common compressed image format.

  • Joystick: An input device often used in gaming or simulations.

  • JRE (Java Runtime Environment): Software that allows Java applications to run.

  • JVM (Java Virtual Machine): A virtual machine that executes Java bytecode.

  • JSON (JavaScript Object Notation): A lightweight format for data exchange.

  • JTAG (Joint Test Action Group): A standard for testing and debugging electronics.

K

  • Kernel: The core of an operating system that manages resources and hardware.

  • Keylogger: Malicious software that records keystrokes.

  • Keystroke: A single press of a key on a keyboard.

  • Kbps (Kilobits per second): A unit for measuring internet speed.

  • KDE (K Desktop Environment): A graphical user interface for Linux.

  • Keyword: A reserved word in programming languages with special meaning.

  • Knowledge Base: A centralized collection of information and solutions.

  • Knoppix: A Linux distribution that runs directly from a CD/DVD.

L

  • LAN (Local Area Network): A network covering a small area like a home or office.

  • Laptop: A portable personal computer.

  • Latency: The delay before data starts transferring after a request.

  • Linux: An open-source operating system widely used for servers and desktops.

  • Load Balancer: A device or software that distributes network traffic across servers.

  • Localhost: Refers to the computer you are currently using (127.0.0.1).

  • Log File: A file that records system events and activities.

  • Login: The process of accessing a computer system with credentials.

  • Logic Gate: A basic building block of digital circuits (AND, OR, NOT).

  • Loop: A programming structure that repeats instructions until a condition is met.

  • Low-Level Language: A programming language close to machine code.

  • LPI (Lines Per Inch): A measure of printing resolution.

  • LTO (Linear Tape-Open): A magnetic tape storage technology for backups.

  • LTE (Long Term Evolution): A standard for high-speed wireless communication.

  • LUN (Logical Unit Number): An identifier used in storage systems.