Introduction - If you have any usage issues, please Google them yourself
The electronic scale is mainly controlled by the single chip microcomputer STC90C52RC, and realizes the basic control function of the electronic scale. The system can be divided into three parts: minimum system, data acquisition and human-machine interaction interface. The minimum system part mainly includes STC90C52RC and classic reset circuit, and the data acquisition part is composed of weighing sensor, signal amplification and A/D conversion section. The signal amplification and A/D conversion are mainly implemented by special type high precision 24 bit AD conversion chip HX711; the human-computer interaction interface is the keyboard input and the dot matrix LCD display. Using 4*4 matrix keyboard and 1602 LCD, you can input data and display data conveniently. The whole system has simple structure, convenient operation, complete functions, high accuracy and certain development value.