This paper introduces the design method of the display module for LED keyboard based on AT89C2051 miccontroller, and illuminates the structure and the exterior expand circuits of the module, along with the content and operation ways of each functional reg
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李昔华.基于I2C接口的键盘/LED显示模块[J].重庆工商大学学报(自然科学版),2004,(5): LI Xi-hua. Design of display module for LED keyboard based on I2C interface[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2004,(5):