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paper prototype
subject			fact

paper prototype	has definition A set of pictures of a system used to demonstrate how the system would work if implemented
	has benefit can often be a very powerful tool for eliciting ideas and feedback
	has benefit very easy to create
	has purpose to show to customers and users in sequence, to explain what would happen when the system runs
	is ideal for parallel development
	is a subtopic of 4.6 - Some Techniques for Gathering and Analyzing Requirements
	is a kind of prototype
	represents the user interface of a system
prototype	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 divided up into subsystems

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