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.
The application of new ideas to practical problems (cf. research).
The process of developing; growth, directed change.
A project consisting of one or more commercial or residential buildings.
The active placement of the pieces, or the process of achieving it.
The expression of a function in the form of a series.
The building of such a project.
Something which has developed.
The process by in which previous material is transformed and restated.
The second section of a piece of music in sonata form, in which the original theme is revisited in altered and varying form.
The process by which a mature multicellular organism or part of an organism is produced by the addition of new cells.