【正文】 將進(jìn)入尾聲，也意味的畢業(yè)的到臨。回想起大學(xué)四年的點(diǎn)點(diǎn)滴滴，甚是不舍。畢業(yè)了，自己的學(xué)習(xí)生涯即將結(jié)束，我們每個(gè)人都將踏上新的旅程，這不是結(jié)束而是開(kāi)始。由此衷心感謝陳老師和各位同學(xué)的幫助和指導(dǎo)，特別是陳老師在百忙之中抽出時(shí)間給我們進(jìn)行論文上的指點(diǎn)和問(wèn)題的解決。在寫(xiě)論文期間，陳老師給了我細(xì)心的指導(dǎo)和幫助，并且會(huì)主動(dòng)和我討論和交流問(wèn)題，教會(huì)我怎么搜尋資料以及資料的篩選，并指出了我論文中的不足之處和需要修改的地方。The development and application of LEDAs the further development of display device and technology, screen display system has been widely used in national economy, LED display as a carrier for displaying information is one of major media. LED display is posed by using LED lattice module or pixel unit. As puter technology developed, LED digital has the characteristics of high reliability, long life, high cost performance, low using cost, strongly adaptive capacity to environment which can be directly driven without reducing drive, therefore, it has been playing a importance role in the field of flat display. and for a long period of time, there are considerable room for development. So, it widely used in the financial markets, hospitals, stadiums, airports, terminals, stations, highways and other public places for information display and advertising.First LED Summary LED (Light Emitting Diode), lightemitting diode, is a solid state semiconductor devices, which can be directly converted into electricity to light. LED is the heart of a semiconductor chip, the chip is attached to one end of a stent, is the negative side, the other end of the power of the cathode, the entire chip package to be epoxy resin. Semiconductor chip is posed of two parts, part of the Ptype semiconductor, it inside the holedominated, the other side is the Ntype semiconductor, here is mainly electronic. But linking the two semiconductors, among them the formation of a PN junction. When the current through the wires role in this chip, will be pushing eP, P zone in the hole with electronic posite, and then to be issued in the form of photon energy, and this is the principle of LED luminescence. The wavelength of light that is the color of light, is formed by the PN junction of the decisions of the material.Second LED developmentThe development of LED display can be divided into the following phases: first phase 1990 to 1995, mainly monochrome and 16 color graphics screen. Used to display text and simple images, mainly used in railway stations, financial securities, banks, post offices and other public places, as public information display tools. The second stage is from 1995 to 1999, there have been 64, 256 level grayscale twocolor video screen. Video control technology, image processing, optical fiber munication technology applications will enhance the LED display to a new level. LED display control LSI chips special at this time developed by domestic panies, and can be applied. The third stage, from 1999, red, pure green, blue LED in bulk into China, while domestic enterprises indepth research and development work, using red, green, and blue LED production of fullcolor display has been widely used , poured into sports stadiums, convention centers, squares and other public places, which will bring the domestic largescreen fullcolor era. Third LED advantagesConductor lightemitting diode (LED) as a thirdgeneration semiconductor lighting source. This fantastic product has a lot of advantages: (1) efficient light: spectra of almost all concentrated in the visible light frequency, the efficiency can reach 80% 90%. The luminous efficiency of incandescent visible light efficiency of almost 10% 20% only. (2) high quality of light: not as a result of spectrum UV and infrared, there is no heat, no radiation, is typically a green light illumination. (3) energy consumption of the small: single power generally , through the cluster can be tailored to meet different needs, and waste very little. As a light source, under the brightness in the same power consumption of only ordinary incandescent 1/810. (4) long life: flux attenuation to 70% of the standard life expectancy is 100,000 hours. A semiconductor light can be used under normal circumstances 50 years, even if the long life of the people, life will be used up to two lights. (5) durable and reliable: No tungsten wire, glass and other easily damaged ponents, nonnormal retirement rate is very small, very low maintenance costs. (6) the application of flexibility: small size, can flat pack, easy to develop into a short thin products, make point, line, face various forms of specific applications. (7) Security: working voltage or less in between the current 2070mA in between. (8) green: recyclable waste, no pollution, unlike fluorescent lamps containing mercury as ingredients. (9) response time is short: to adapt to frequent and highfrequency switching operation of occasions. In recent years, China39。 the field of puter and microelectronics technology development in the field of display control technology, the video control technology, the screen dynamic display effect of greatly increased. In this stage, LED display in China has developed rapidly, LED display industry turn into a new hightech industry. Today, LED display used in broader field, here I will talk my point about the LED in the hotel and leisure field applications.I. LED display of the effectiveness of the hotelLED electronic display is the fourth largest advertising media after television，newspaper, network. It will bring tangible social benefits for investors and economic benefits, LED electronic display can be received from the puter, TV, VCR, VCD, video cameras and other information transmitted, and play dimensional or threedimensional animation, text information at anytime.With economic grows, Accelerated pace of social work life, the hotel in people39。s demand for investors with a huge, immeasurable, longterm social and economic benefits.1. SocialA, promote the hotel39。s image.B, promote the hotel39。 Hotels flowintensive, information requirements wide。s best advertising media, can be, within 365 days a year to underta