On the evening of April 1, 18:30-19:30, the first phase of the technical department of Changsha Jianke Electronics Co., Ltd. on the impact of MCU IO port input characteristics on the circuit was successfully held in the training room on the 5th floor of the R&D building. The company’s management A total of 11 people from the technical department participated in this training. Through this training, everyone understood the influence of the IO circuit inside the MCU on the hardware design schematic.