《4位7段LED的8级灰度显示》实验设计  

Design and Practice in Experiment of 4-Digit LED 8-Gray Scale Display

作　　者：钟建[1] 蒋泉[1] 饶海波[1] 吴援明[1] 杨刚[1] 张磊[1] 陈文彬[1] 

机构地区：[1]电子科技大学光电信息学院,成都610054

出　　处：《实验科学与技术》2008年第3期20-22,共3页Experiment Science and Technology

摘　　要：对《4位7段LED的8级灰度显示》实验教学设计与实践进行了探讨。通过对实验系统的构建与实验结果的分析,培养学生的动手实践能力,强化了学生综合实验素质的训练。针对现有的LED显示屏,学生能掌握7段LED驱动器HEF4543的结构原理和应用电路,测量LED的驱动波形信号;掌握占空比调制灰度原理,并测量亮度-占空比曲线。Experiment of a LCM （ LCD module）, which is attributed to driving technology of display devices of UESTC, is introduced in this paper. After the program is debugged and compiled, a PC sends it to a single chip to control DCM162B LCM by an ISP download circuit. The students can master the applied circuits of HD44780 and improve the ability to design the driving program through the experiment.

关 键 词：发光二极管 灰度 占空比 

分 类 号：TN383.02[电子电信—物理电子学] TN141.9