摘要:当今,伴随着科学技术的进步与发展,LED点阵电子显示屏作为一种新型的显示元件,逐渐映入人们的眼帘。它是由许多独立的LED发亮二极管,通过封装的方式制成的。通过LED点阵电子显示屏我们可以实现汉字、数字和文字的显示,常常在告示牌、海报和标识牌上使用。39348
本文使用STC89C52单片机,来实现16*16 LED点阵屏幕显示汉字的功能。其中STC89C52单片机是整个系统的核心,主要功能是实现整体控制。该设计利用4块8*8电子点阵模块来拼成一个16*16点阵模块,点阵行方向的控制需要利用74LS154译码器,通过利用串行输入八位并行输出的74LS595级联来控制列方向,为了达到动态显示的效果,需要利用迅速的动态刷新来显示设定的内容。 毕业论文关键词:点阵显示;单片机;动态扫描;译码器
LED dot matrix screen design based on MCU
Abstract: Today, under the development of technology and society, latticed LED display shows up on the pubic view as a new-type display components. This type of LED is packaged by different inpidual LED diodes. Through latticed LED display, words and number can be perfectly displayed. Also, it is widely applied on notification sign, poster and mark plate on public.
This article aims to design a basic 16 * 16 dot LED model by STC89C52 to display Chinese. The Microcontroller STC89C52 is core to control whole system. The design idea is to combine 4 8 * 8 latticed modules to build a 16 * 16 latticed module. The module row direction is controlled by 74LS154 decoder. As for column direction, it is controlled by 74LS595 by using serial input and 8 parallels output. In order to reach effect for dynamic display, it utilizes dynamic refresh function to display the setting content.
Keywords: latticed module; Microcontroller; dynamic scan; decoder
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