A printing consumable detachably installed on a printer comprises: a first nozzle circuit (c1) configured to feed back a first signal in response to a detection signal transmitted by said printer ; and a second nozzle circuit (a2) configured to not respond to the detection signal transmitted by said printer or configured to feed back a second signal different from the first signal in response to the detection signal; said second nozzle circuit having a feedback circuit (a1) and a consumable chip, said consumable chip having a conversion circuit which is electrically connected to said feedback circuit; wherein said feedback circuit is configured to feed back a first signal in response to a detection signal transmitted by said printer ; wherein said conversion circuit includes: a first adjustment circuit electrically connected to said feedback circuit, wherein said first adjustment circuit is configured to adjust said detection signal, such that said feedback circuit feeds back a second signal after receiving said adjusted detection signal, and/or a second adjustment circuit electrically connected to said feedback circuit, wherein said second adjustment circuit is configured to adjust said first signal fed back by said feedback circuit to said second signal characterized in that said first adjustment circuit is configured to increase a voltage of said detection signal, and said second adjustment circuit is configured to increase a voltage of said first signal to obtain said second signal. a first nozzle circuit (c1) configured to feed back a first signal in response to a detection signal transmitted by said printer ; and a second nozzle circuit (a2) configured to not respond to the detection signal transmitted by said printer or configured to feed back a second signal different from the first signal in response to the detection signal; said second nozzle circuit having a feedback circuit (a1) and a consumable chip, said consumable chip having a conversion circuit which is electrically connected to said feedback circuit; wherein said feedback circuit is configured to feed back a first signal in response to a detection signal transmitted by said printer ; wherein said conversion circuit includes: a first adjustment circuit electrically connected to said feedback circuit, wherein said first adjustment circuit is configured to adjust said detection signal, such that said feedback circuit feeds back a second signal after receiving said adjusted detection signal, and/or a second adjustment circuit electrically connected to said feedback circuit, wherein said second adjustment circuit is configured to adjust said first signal fed back by said feedback circuit to said second signal a first adjustment circuit electrically connected to said feedback circuit, wherein said first adjustment circuit is configured to adjust said detection signal, such that said feedback circuit feeds back a second signal after receiving said adjusted detection signal, and/or a second adjustment circuit electrically connected to said feedback circuit, wherein said second adjustment circuit is configured to adjust said first signal fed back by said feedback circuit to said second signal characterized in that said first adjustment circuit is configured to increase a voltage of said detection signal, and said second adjustment circuit is configured to increase a voltage of said first signal to obtain said second signal. <EOS>