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G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
G06G7/20—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating powers, roots, polynomes, mean square values, standard deviation
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K4/00—Generating pulses having essentially a finite slope or stepped portions
H03K4/04—Generating pulses having essentially a finite slope or stepped portions having parabolic shape
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K7/00—Modulating pulses with a continuously-variable modulating signal
H03K7/06—Frequency or rate modulation, i.e. PFM or PRM