| http://www.w3.org/ns/prov#value | - The device is a technical solution disclosed in the British Patent GB2, 365, 691 (published on Feb. 20, 2002), comprising a group of selection switches (S1, S2, . . . , SN) and M groups of resistors (R11, R12, . . . , R1N; R21, R22, . . . , R2N; . . . ; RM1, RM2, . . . , RMN), with th
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