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It has been shown that arrays of calculating elements, providing various functions of their input variables, can be used as general-purpose signal processors. Such elements could, in general, operate on binary, analog, or numerical inputs. Networks or arrays composed of elements in each of these domains have advantages in particular applications. The numerical processing element and its use in programmable arrays is the subject of this paper.
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Hampel et al. (1899) studied this question.
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