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man-machine system assessment

man-machine system assessment Definition
 Human-factors engineers regard humans as an element
in a “man-machine” system. A “man-machine system” means that the man and his machine have a reciprocal relationship with each other. A man is
effectively a single channel device, although one that time shares. An ergonomically sound system provides optimum performance because it takes advantage of the strengths and weaknesses of both its human and
machine components. This has always been done intuitively by good designers, but systems ergonomics aims to ensure that this is done systematically.

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