一种基于单片机的多功能电子称

以AT89C52 单片机为核心，直接利用P0 口进行了键盘扩展，利用高灵敏度的压力传感器进行信号提取，利用高速、高灵敏度串行A/D 芯片CS5511，配有液晶图形屏显示和微型汉字打印机。具有标定、校零数据保存、打印购物清单、超重报警等功能。
关键词：电子称; AT89C52; LCD; CS5511; 微型打印机
Abstract: AT89c52 is the kernel in the system. The keyboard of the design is extended by p0 port. We get the signal from the sensitive pressure sensor and amplify it. The A/D transformer is cs5511. The dot matrix LCD module is used as the monitor. The smart CH character printer could output purchase lists. The system has achieved all the basic and the improved demands. In addition we improved its function base on above such as system demarcate, zero rectify and so on. Moreover, the data is stored in flash memory. In this way the design can avoid losing data when the electricity is cut off suddenly.
Key words: Electron balance; AT8952; LCE; CS5511; Mini-Printer