An image forming apparatus comprising a consumable (1, 2, 3, 4) and a consumable chip, wherein the consumable chip is installed on the consumable (1, 2, 3, 4); the consumable (1, 2, 3, 4) 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, a second connection terminal, and an electronic module electrically connected to the first connection terminal and the second connection terminal; 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 and the second connection terminal into a DC voltage to supply power to the microcontroller; characterized in that the image-forming apparatus is disposed with a first connection pin and a second connection pin 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 is configured to be connected to the first connection pin when the consumable (1, 2, 3, 4) is installed on the image-forming apparatus; the second connection terminal is configured to be connected to the second connection pin when the consumable (1, 2, 3, 4) 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 and the second connection terminal. the power supply circuit is configured to convert a first input signal and a second input signal received through the first connection terminal and the second connection terminal into a DC voltage to supply power to the microcontroller; characterized in that the image-forming apparatus is disposed with a first connection pin and a second connection pin 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 is configured to be connected to the first connection pin when the consumable (1, 2, 3, 4) is installed on the image-forming apparatus; the second connection terminal is configured to be connected to the second connection pin when the consumable (1, 2, 3, 4) 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 and the second connection terminal.