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中文摘要：
开发了嵌入式智能仪表的显示接口。介绍了接口硬件和LCD控制器的工作原理；基于Linux下的Framebuffer技术，设计了适用于IntelPXA255处理器的液晶屏驱动；阐述了基于Framebuffer的MiniGUI图形用户程序移植开发。显示接口的设计完善了仪器的功能，方便了现场操作人员的使用。设计的LCD显示接口已成功应用于故障诊断仪器产品。
英文摘要：
A graphic user interface for the intelligent instrument was developed. The working principle of the LCD controller and the connection between the microprocessor and LCD were introduced. The device driver of the LCD based on framebuffer was designed. And the MiniGUI application was programmed and transplanted. The design of the user interface enhanced the instrument＇s performance, and made it easy to use. The developed graphic user interface has successfully found application in some instruments for fault diagnosis.
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