In various embodiments, a fastener cartridge is disclosed. The fastener cartridge comprises a cartridge body comprising a plurality of fasteners, a longitudinal knife slot defined in the cartridge body, and a circuit comprising a plurality of frangible resistors extending across the longitudinal knife slot. The plurality of frangible resistors comprises a first resistor and a second resistor, wherein the circuit comprises a first resistance when the first resistor and the second resistor are intact, wherein the circuit comprises a second resistance when the first resistor is split and the second resistor is intact, and wherein the second resistance is different than the first resistance.
