单片机LED显示接口技术

简要介绍了LED的基本结构和工作原理，从静态和动态显示两个方面进行说明，并以具体的实例分析了LED显示的硬件接口电路和软件编程方法。     

电子封装中各向异性导电胶的可靠性

Anisotropic conductive adhesive technology for electronics packaging and interconnect application has significantly been developed during the last few years. It is time to make a summary of what has been done in this field. The present paper reviews the technology development, especially from the reliability point of view. It is pointed out that anisotropic conductive adhesives are now widely used in many applications and the reliability data and models have been developed to a large extent for anisotropic conductive adhesives in various applications.     

基于绿色包装的油墨包装优化设计

基于绿色包装的思想,依据印刷油墨自身特性,从减少资源浪费、提高包装质量、确保产品安全等方面进行分析,提出在印刷油墨包装中的设计步骤及设计方法,对油墨包装容器金属罐与外包装瓦楞纸箱进行优化设计,节约资源,减少包装成本,以此来降低油墨包装物流成本,实现环境效益和经济利益最大化的目标。     

基于8031实现LED大屏幕显示屏

章介绍了以8031为核心的LED大屏幕显示屏的设计原理，在设计LED的列驱动电路时，采用两列信号驱动，将整个屏幕上下平分为二的扫描技术，从而提高了显示亮度，防止频闪，列驱动模块采用大电流的74HC595芯片。并能与上位机(PC机)之间通信，PC机向8031发送数据，8031接收数据并显示。     

基于单片机嵌入系统的人机交互

在keil51的开发环境下,以最普及的键盘和LED显示为例,用C51语言编制完整的人机交互软件系统,实现单片机嵌入系统的结构化编程.     

高校LED电子显示屏的选型、安装与管理

LED电子显示屏是一种显示文字、图像、二维或三维动画及电视、录像、VCD等视频信号的理想的公众信息显示媒体,作为当代高科技发展的产物,在各种行政事业单位得到了广泛的应用。该文详细介绍了LED屏的分类、应用及管理方法,给大家提供了一些有益的参考和帮助。     

一种新型的白光LED用红色荧光粉SrMoO4:Eu3+

采用固相法合成了红色荧光粉SrMoO4:Eu3 并对它的发光性质进行了研究。它的激发谱为双峰结构,两主峰分别位于394nm的近紫外区和464nm的蓝色可见光区。发射谱为线谱,主峰峰值为624nm,这是能与紫外和蓝色芯片符合的很好的红光。所以它是一种很好的制备白光LED用的荧光粉材料。     

可调家用万年历的单片机原理

本文主要描述以HT48R30A单片机为微处理器构成的电路系统硬件的工作原理,着重介绍了本系统所应用的各硬件接口技术和各个接口模块的功能及工作过程.通过载体显示数据,所以具有人性化的操作.可以显示时间,公农历日期、星期,温度、节气,和当天距离节气的天数,并有闹铃和智能控制的功能.     

对艺术院校包装设计教学的思考

艺术院校包装设计教学要融入包装大环境，以新的包装理念为指导，确立因应时代的教学观念、教学体系、教学方法。利用现代科技，以期达到培养综合设计人才和引导经济的目的。     

Can LEDs help with art conservation? – Impact of different light spectra on paint pigment degradation

The impact of the spectral composition of light on the discoloration of paint pigments has been investigated for the case of lead chromate sulfate, an unstable yellow pigment used by Vincent van Gogh and other painters. With LEDification, museum lighting is moving from using halogen to LED lamps. LED light sources have a significantly different spectral composition than halogen lamps. To understand the impact of these differences on pigment stability, the wavelength dependence of pigment discoloration was determined. Contrary to the expectation that lower wavelength photons induce more damage than higher wavelength ones, UV (394?nm), blue, and cyan light all lead to similar levels of discoloration of a pigment for the same level of radiant power. By understanding this wavelength dependence, it becomes possible to create white light LED lamps with a spectral composition tuned to minimize the degradation effect. An existing LED solution with a modified emission indeed resulted in 30% less color change in the experiment than halogen. Furthermore, a method is proposed to optimize the LED spectra by tuning to the properties of each specific artifact. Simulations show that this can reduce the damage of the light source by 45% in specific cases.