液晶显示系统LCD应用一例

介绍在一电子图示仪课题中，如何使用大规模点阵式液晶显示系统LCD及有关硬件连接和控制程序设计。     

基于单片机给水模糊控制实现

本设计以STC89C52RC单片机作为单片机给水模糊控制系统设计的控制核心,主要实现:人工设定液位,利用LCD1602显示实时液位和设定液位,恒液位控制,液位越限报警等功能,通过软件程序实现系统的自动闭环控制,使容器内液位达到设定值。     

The competition and equilibrium analysis of LCD TV and PDP TV

This study has investigated the dynamic competitive relationship between PDP TVs and LCD TVs by means of their quarterly shipments. The renowned Lotka-Volterra competition diffusion model has been adopted to conduct the empirical analysis with the Lyapunov function to carry out equilibrium and stability analysis, and estimate the domain of attraction which describes the trend and phenomenon of TV shipments. The results illustrate that there is good fitting performance while adopting this model. The competitive relationship can be viewed from the perspective that the LCD TV is the prey while the PDP TV is the predator. The possibility, nevertheless, for dropping the price of LCD TVs is an advantage of the attractiveness of the product which can be noted in higher growth rate than PDP TVs. With respect to the equilibrium stability analysis and estimated domain of attraction, 40- to 49-inch PDP TVs will not disappear from the market, but will generate a stable equilibrium with LCD TVs and sales volume presents simultaneous increase or decrease. In the supply and demand analysis, LCD TVs present a surplus of supply from 2008; therefore, how to conduct appropriate inventory management will be an emerging issue.     

直流稳压电源及漏电保护装置设计

系统以MSP430F149单片机为主控电路。采用LM2599DC-DC升压电路和多个LM2940稳压,采集接负载电压、电流,通过单片机内部进行A/D转换,用LCD12864显示所测数值。系统由直流稳压电源电路、开关切换电路、漏电流保护电路、主控电路、显示电路构成。系统实现设计要求输出电压、电流;电压调整率小;负载调整率小;实时显示所测数值;漏电保护装置动作电路误差绝对值小、接入功耗小。     

The U.S. Television Set Market

The U.S. television set market is projected to reach the $27 billion mark by 2010, up from $25 billion in 2006. The bulk of this growth will come from the flat-panel television set segment, which is projected to grow 65 percent from 2006-2010. The transition to digital television continues to be a major underpinning of the television set market in the United States. Additionally, consumers are increasingly looking to use their television sets for a myriad of non-traditional activities including accessing the Internet, checking e-mail, and watching content accessed from hardware devices like digital video recorders. JEL Classification L63     

The Cross-industry Spillover of Technological Capability: Korea’s DRAM and TFT–LCD Industries

Studies of Korea’s Thin Film Transistor–Liquid Crystal Display (TFT–LCD) industry have emphasized the government policy, industrial organization, and the firm’s strategy as key success factors. However, the fact that knowledge spillover, which tends to occur between highly technologically related industries, can lead to a reduction in innovation effort has been overlooked. We examined the technological relationships between Dynamic Random Access Memory (DRAM) and TFT–LCD industries and investigated their spillover into the areas of technology, human resources and organization, and network. The results show spillover in capital control, technology, production and quality management, organizational systems, and key personnel. This implies that spillover effect in high technology firms may diversify their products due to existing technological capabilities.     

基于单片机的红外遥控风扇的设计与制作

文中设计以MCS-8051单片机为核心,巧妙的采用了红外线遥控技术、单片机控制技术、液晶显示技术、红外编码解码技术。把智能控制技术用于家用电器的控制中,用遥控器对风扇进行变档调速。     

具有实时语音播报的超声波测距测速仪设计

超声波凭借自身指向性强、能量消耗缓慢,以及在介质中传播距离远等优势,进而广泛应用于距离测量。与其它检测方式相比,超声波作为一种非接触式的检测方式,在检测过程中不受光线、被测对象颜色等因素的影响和制约。本文介绍了超声波测距测速的原理和方法。以STC89C52RC单片机作为主控制器,用定时器实现超声波驱动信号的发射,用动态扫描法实现测量结果的12864液晶显示和ISD4004语音播报。     

未来液晶显示技术展望

液晶显示设备越来越多,从手机到电脑显示器,从平板电视到液晶投影仪,从掌上电脑到便携游戏机.无处没有液晶显示技术的身影.在商品同质化的今天,怎样使自己的液晶产品在同类产品中脱颖而出呢?在电脑液晶显示和液晶电视市场体现的十分激烈.在功耗,响应时间,动态对比度,多点触摸,广色域技术(使液晶显示设备的色彩空间达到NTSC的90%以上色域的技术)等等各个方面都与前几年有了长足的进步.下一代的液晶面板技术如:OLED和PLED也在从实验室走到了人们面前,相应的产品已经走上货架,相信更加成熟实用的产品不久就会来到广大用户面前.     

A technology replacement model with variable market potential — An empirical study of CRT and LCD TV

The rapidly changing economic environment and increasingly fierce competition indicate that companies must innovate in both their products and marketing strategies if they are to continue to flourish. Specifically, the ability to accurately predict the demand for products is crucial when firms decide to allocate their resources, especially in the fast moving high technology industries, where there is very high investment in R&D and production facilities. This study establishes a forecast model for technology replacement based on the diffusion model with population growth used for the variable market potential. The proposed model is then applied to investigate the CRT and LCD TV market.The results suggest that the new model is more accurate than the constant market potential model in fitting and forecasting performance. Consumers who purchase a TV for the first time are likely more attracted to LCD TV rather than CRT TV. As for those individuals who already own a CRT TV, the attraction is not strong enough to encourage them to replace their current CRT TV with a new LCD TV. Moreover, it is noted that the falling price of LCD TV is an essential factor in encouraging purchases.