Answer:
A logical unit of a system.
Explanation:
i'm thinking your are talking about system layers such as the ISO? Layers help identify the order of how the whole system works.
Answer:
Extreme programming is a software development technique which is used to enhance software quality and it's response to ever changing customer requirements.
Testing
Testing is main focus in extreme programming.Extreme programming addresses testing in a way that if a minute testing can eliminate a bit of flaws, extensive testing can terminate a lot of flaws.
Evolution in Extreme programming is like this:-
Coding:-First programmers will code the problem.
Testing :- Testing is done to remove flaws.
Listening:- Programmers must listen to the customers to what they need.
Designing:-Then design according to the customer needs.
It help to melt the snow quicker. they salt eats away the snow.
It would be, <span>the <span>microprocessor.
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It is also a multipurpose and programmable device that accepts inputted data and process the data to provide an output.
Hope this helps!
