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what does comparator mean in english? Comparator In electronics, a comparator is a device that compares two voltages or currents and outputs a digital signal indicating which is larger. It has two analog input terminals and and one binary digital output. The output is ideally A comparator consists of a specialized high-gain differential amplifier.
comparator. 1  any of various instruments for making comparisons, as of lengths or distances, tints of colors, etc. 2  Electronics. a circuit for comparing two signals, as readings of duplicate information stored in a digital computer, and for giving an indication of agreement or disagreement between them.