A theoretical construct or device with known input and output characteristics but unknown method of operation.
A flight recorder; the brightly colored cockpit voice recorders and flight data recorders in an aircraft designed to aid in determining the cause of an accident.
A device used in phreaking that prevents the calling party from being billed for the call placed.
A type of theater characterized by a lack of decoration or complex mechanisms.
Any similar device on motor vehicles, such as rail event recorders and ship trip recorders.
To focus on the inputs and outputs without worrying about the internal complexity.
A method or way of organizing or planning.
A set of equations involving the same variables, which are to be solved simultaneously.
A set of alters, or the multiple (“the individual with multiple personalities due to, for example, a dissociative personality disorder”) who contains them.
Preceded by the word the: the mainstream culture, controlled by the elites or government of a state, or a combination of them, seen as oppressive to the individual.
A set of staves linked by a brace that indicate instruments or sounds that are to be played simultaneously.
A collection of organized things; a whole composed of relationships among its members.
A planetary system; a set of planets orbiting a star or star system
A set of rules for a tabletop roleplaying game.
A comprehensive and logically organized set of propositions or philosophical beliefs.
A set of hardware and software operating in a computer.
A set of body organs having a particular function.