A parameter, in its common meaning, is a characteristic, feature, or measurable factor that can help in defining a particular system.

A special battery-powered form of RAM in certain Macintosh computers where vital system information such as the date and time are stored. 

A parser is a program, usually part of a compiler, that receives input in the form of sequential source program instructions, interactive online commands, markup tags, or some other defined interface and breaks them up into parts.

Pascal is an imperative and procedural programming language intended to encourage good programming practices using structured programming and data structuring. It was the primary high-level language used for development in the Apple Lisa, and in the early years of the Macintosh.

A system that brings optical fiber cabling and signals all or most of the way to the end user. Depending on where the PON terminates, the system can be described as fiber-to-the-curb (FTTC), fiber-to-the-building (FTTB), or fiber-to-the-home (FTTH).

Passive reconnaissance is a type of computer attack in which an intruder attempts to gain information about targeted computers and networks without actively engaging with the systems.

An unspaced sequence of characters used to determine that a computer user requesting access to a computer system is really that particular user. 

  A procedure used by Point-to-Point Protocol servers to validate a connection request.

An application program that is used to identify an unknown or forgotten password to a computer or network resources. It can also be used to help a human cracker obtain unauthorized access to resources.

An authentication process that coordinates user passwords across various computers and computing devices so a user only has to remember a single password instead of multiple passwords for different machines or devices. 

A quick-repair job for a piece of programming. During a software beta test distribution or try-out period and later after the product is formally released, bugs will almost invariably be found. A patch is the immediate solution provided to users.

A wafer-like directional antenna suitable for covering single-floor small offices, small stores and other indoor locations where access points cannot be placed centrally.

A length of cable with connectors on the ends that is used to connect an end device to something else, such as a power source. One of the most common uses is connecting a laptop, desktop or other end device to a wall outlet.

An area of systems management that involves acquiring, testing, and installing multiple patches (code changes) to an administered computer system. 

A patch Matrix, in a video context, is the display in the Monitors window that identifies video and audio tracks in the current source clip and the available tracks in the Sequencer window. 

A mounted hardware unit containing an assembly of port locations in a communications or other electronic or electrical system.