An image forming apparatus comprising a consumable and a consumable chip, wherein the consumable chip is installed on the consumable ; the consumable is detachably installed on the image-forming apparatus; the image-forming apparatus includes an image-forming control unit; and the image-forming apparatus is disposed with a power supply pin (PW+) and a ground pin (PW-), the consumable chip comprising: a substrate, wherein the substrate is disposed with a first connection terminal (DH), a second connection terminal (DL), and an electronic module electrically connected to the first connection terminal (DH) and the second connection terminal (DL); and the electronic module includes a power supply circuit and a microcontroller, wherein: the power supply circuit is configured to convert a first input signal and a second input signal received through the first connection terminal (DH) and the second connection terminal (DL) into a DC voltage to supply power to the microcontroller; characterized in that the image-forming apparatus is disposed with a first connection pin (DH1) and a second connection pin (DL1) which are different from the power supply pin (PW+) and the ground pin (PW-) which are different from the power supply pin (PW+) and the ground pin (PW-); the first connection terminal (DH) is configured to be connected to the first connection pin (DH1) when the consumable is installed on the image-forming apparatus; the second connection terminal (DL) is configured to be connected to the second connection pin (DL1) when the consumable is installed on the image-forming apparatus; the electronic module includes a demodulation circuit and a modulation circuit; the demodulation circuit is configured to demodulate the first input signal and the second input signal to obtain demodulated signals; and the modulation circuit is configured to send modulation signals to the image-forming control unit through the first connection terminal (DH) and the second connection terminal (DL). the power supply circuit is configured to convert a first input signal and a second input signal received through the first connection terminal (DH) and the second connection terminal (DL) into a DC voltage to supply power to the microcontroller; characterized in that the image-forming apparatus is disposed with a first connection pin (DH1) and a second connection pin (DL1) which are different from the power supply pin (PW+) and the ground pin (PW-) which are different from the power supply pin (PW+) and the ground pin (PW-); the first connection terminal (DH) is configured to be connected to the first connection pin (DH1) when the consumable is installed on the image-forming apparatus; the second connection terminal (DL) is configured to be connected to the second connection pin (DL1) when the consumable is installed on the image-forming apparatus; the electronic module includes a demodulation circuit and a modulation circuit; the demodulation circuit is configured to demodulate the first input signal and the second input signal to obtain demodulated signals; and the modulation circuit is configured to send modulation signals to the image-forming control unit through the first connection terminal (DH) and the second connection terminal (DL). <EOS>