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prototype (pilot system)
subject			fact

prototype	is a synonym of pilot system
	has definition A version of a system created primarily to learn more about the requirements, and not intended to be the final product
	has benefit it is easily modified many times in response to feedback from users
	has purpose to gather requirements by allowing software engineers to obtain early feedback about their ideas
	is a subtopic of 1.8 - The Eight Themes Emphasized in this Book
	is a subtopic of 4.6 - Some Techniques for Gathering and Analyzing Requirements
	is a kind of system
	may be developed using a rapid prototyping language
	may not perform any computations
	should be produced early to get a view of potential problems
	should not be turned into the final system since it will be hard to maintain, and will contain many bugs
	usually contains part of the system's eventual functionality
system	can have specification which is then implemented by a collection of components
	exists even if its components change over the course of time, or are replaced by equivalent components
	has scope
	has part component
	has part hardware
	has part module
	has part software
	has part subsystem
	is complex if its scope is broad
	is in a state until an event occurs that causes it to change state
	is divided up into subsystems

Kinds of prototype :

• paper prototype (8 facts) - A set of pictures of a system used to demonstrate how the system would work if implemented

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