The function of digital display instruments is to provide intuitive and accurate measurement results, making it easy for people to quickly obtain and process information. Compared with traditional analog display instruments, digital display instruments have higher accuracy, more stable performance, and better anti-interference ability. Meanwhile, the display information of digital display instruments is easy to read and record, facilitating data transmission and sharing. In the fields of industrial automation, laboratory instruments, medical equipment, etc., digital display instruments are widely used in various measurement and monitoring tasks, providing convenient and accurate information support for people's production and life.