本系统采用单片机 AT89S52 为控制核心，实现电子秤的基本控制功能。系统的硬件部分包括最小系统板，数据采集、人机交互界面三大部分。最小系统部分主要是扩展了外部数据存储器，数据采集部分由压力传感器、信号的前级处理和 A/D 转换部分组成。人机界面部分为键盘输入 ， 128 64 点阵式液晶显示，可以直观的显示中文，使用方便。-The system uses a single chip AT89S52 as the control center for electronic scale basic control functions. The hardware of the system, including the minimum system board, data acquisition, man-machine interface of three parts. Minimum system component is extended to external data memory, data acquisition in part by the pressure sensor, signal processing and the first class A/D conversion parts. Man-machine interface for the keyboard part, 128 64 dot matrix liquid crystal display, you can visually display Chinese, easy to use.