摘 要在当今的现代化社会，科技发展迅速。尤其是单片机技术的开发应用发展，基于单片机技术而研发的产品，为我们的生活提供了极大的方便与实用。本作品基32位ARM控制器LM3S3748设计一个手写绘图输入设备，设计选用Luminary微处理器LM3S3748为主控芯片，由信号输入、信号采样、算法处理和LCD显示等部分组成，以完成手写绘图的功能，设计的重点在于提高精度以及低功耗。信号调节与24位A/D配合，保证了测量精度。合理的设计，保证了低功耗。C语言进行软件设计，增加了程序的可读性，软件的设计采用模块化结构，使程序设计的逻辑关系更加简洁明了。关键词：手写绘图； LM3S3748； 精度； 低功耗?AbstractIn today's modern society, science and technology is developing rapidly. Especially the development of the single chip microcomputer application development ,based on single chip microcomputer technology research and development of products ,now which have provided great convenience and practical for our life.This system based on the LM3S3748 which is design a handwritten drawing input devices,it contains a signal modulator , a high-speed A/D converter used sampling signal , a arithmetic module and the LED demonstration to achieve the function of handwritten drawing, the emphasis of it is improving the sensitivity and Low power consumption .The signal modulator ensures t