摘 要本设计是基于单片机，采用 LED 阵列旋转的方式来显示文字，利用人眼的余晖效应这一特点，只需要设置两列显示阵列并在电机的作用下高速旋转，就可以显示出很好的动画效果，即可以使用较少的 LED 就可以实现显示屏的功能。LED 旋转式显示屏可以弥补平板式显示屏的缺点，利用较少资源，能降低成本。本设计在深入了解 LED 与单片机的工作原理的基础上，采用 STC12C5A32S2 单片机做为控制核心，控制 LED 的点亮和熄灭，采用 DS1302 时钟芯片来提供准确的时间信息，显示部分电路采用无线供电方式供电，以弥补电池供电带来的缺点，采用红外二极管来控制电机转速以保证显示出的内容正确。软件设计采用 Keil uVision4 软件开发平台和 C 语言来编写程序。关键词：旋转 LED 单片机 无线供电 显示屏ABSTRACTThis design is based on a SCM(single chip microcomputer), which uses LED array rotation to display text. Taking advantage of the afterglow effect of human eyes, it only needs to set up two columns of display array and rotate at high speed under the action of a motor to display a good animation effect. In other words, less LED can be used to realize the function of the display screen. LED rotary display can make up for the shortcomings of flat-panel display, use less resources, can reduce costs.This design on the basis of thorough understanding of LED and the working principle of SCM, adopting STC12C5A32S2 MCU as control core, control the LED light and extinguish, DS1302 clock chip is used to provide an accurate time information, the display circuit uses wireless power supply to make up for the disadvantages brought by battery power supply, the infrared diode is used to control the motor speed to ensure that shows the content of the right. Keil uVision4 software development platform and C language were used for software design.Key words: LED SCM wireless power supply display screen 目 录第一章 绪论11.1 课题背景及意义 11...
