FIELD: automation and computer engineering; metrology. SUBSTANCE: device that can be used for building digital reference group provides for shaping estimate of real value of physical quantity at its output; this estimate is obtained using maximum likelihood method including previous-moment actual value of physical quantity of digital reference group. Device has registers, dividers, power converters, multipliers, adders, comparators, square-ware generators, inverters, and functional converter. EFFECT: enhanced precious of estimate. 1 cl, 2 dwg
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