摘要
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。
AT89c52, is the kernel in the system. The keyboard of the design is extended by pO port. We get the signal from the sensitive pressure sensor and amplify it. The A/D transformer is ca5511. 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.
出处
《微计算机信息》
北大核心
2006年第04Z期52-53,共2页
Control & Automation
基金
得到山东省自然科学基金资助(2004ZX35)
山东理工大学科研基金资助(03KJ16)
