- System Design Tools
Function: a specific or discrete action (or series of actions) necessary to achieve a given objective [Blanchard and Fabrycky, 2011, p. 100]. Functions and thinking in functions are important in systems engineering and systems design. The functionality of a system determines to a large extent the very reason for existence of the system the name of the product reflects this. A coffee maker makes coffee, a computer computes, a music player plays music. This also illustrates the way to describe a function: as a verb and a substantive. The verb describes the action and the substantive describes the object the action acts upon.