It depends what the question is - and whether someone who knows the answer has viewed it !
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someone please answer this question? :/
Well then, You'd better ask someone cleverer than me! (The first answer to this question had the correct answer and I'm messing it about.....)
Sorry, but this is a very subjective question. Because an invention that has benefited you may have harmed someone else.
This seems like a question from an electrical course, and is probably best answered by referring to your course materials. It's your test question, not ours, and there won't always be someone else to ask for the answer. Earn your diploma.
Orthogonality is to do with a right angle, what has orthogonality got to do with general computer programming? I fear this is another badly asked question by someone engaged in homework avoidance and that the quality of the question indicates the success of previous homework avoidance.