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.
Any piece of equipment made for a particular purpose, especially a mechanical or electrical one.
A peripheral device; an item of hardware.
An improvised explosive device, home-made bomb
A technique that an author or speaker uses to evoke an emotional response in the audience; a rhetorical device.
An image used in whole or in part as a trademark or service mark.
A motto, emblem, or other mark used to distinguish the bearer from others. A device differs from a badge or cognizance primarily as it is a personal distinction, and not a badge borne by members of the same house successively.
A project or scheme, often designed to deceive; a stratagem; an artifice.
An image or logo denoting official or proprietary authority or provenience.