"基于STC89C52单片机的电子秤设计与实现"

Based on the complete version of the graduation compilation document "Design of Electronic Scale Based on Single Chip Microcomputer - Graduation Compilation (Complete Version)", this project utilizes the STC89C52 single-chip microcontroller as the central control unit to achieve the automatic weighing function of the electronic scale. The electronic weighing system mainly consists of the STC89C52 single-chip microcontroller as the central control unit, weighing sensors and A/D converter to measure the weight of the object, an additional display unit, and a matrix keyboard module. It realizes the basic functions of electronic scale such as weighing, zero setting, inputting unit price, calculating total price, and displaying, and also includes an alarm indication function when the weight exceeds the maximum measuring range. In this design, intelligence, automation, and user-friendliness are applied to the control system of the electronic weighing scale, ensuring accurate and convenient measurements with features such as automatic weighing and LCD digital display. Key words: STC89C52 single-chip microcontroller; weighing sensor; A/D converter; LCD display.