Russian Oleg Vladimirovich Losev independently created the first LED‚ although his research was ignored at that time. In 1955‚ Rubin Braunstein of the Radio Corporation of America reported on infrared emission from gallium arsenide (GaAs) and other semiconductor alloys. Experimenters at Texas Instruments‚ Bob Biard and Gary Pittman‚ found in 1961 that gallium arsenide gave off infrared radiation when electric current was applied. Biard & Pittman received the patent for the infrared light-emitting diode
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PROPERTIES AND CHARACTERISTICS OF COMMON INDUSTRIAL MATERIALS “LCD‚ LED & CRT” LCD COMPOSITION A liquid-crystal display (LCD) is a flat panel display‚ electronic visual display‚ or video display that uses the light modulating properties of liquid crystals. Liquid crystals do not emit light directly. LCDs are available to display arbitrary images (as in a general-purpose computer display) or fixed images which can be displayed or hidden‚ such as preset words‚ digits‚ and 7-segment displays
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Strategy and planning essay 1. Executive Summary: In this research paper we will briefly discuss about the essential factors that involved in strategic planning and decision making and the change management and the importance of change management. The essay is all about the important strategic tools which can be implemented in order to get an excellent strategic plan. In conclusion the back bone of any organisation which tends to become a success lies upon each and every decision they make and
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Document Number: MMA8452Q Rev 4.1‚ 08/2011 Freescale Semiconductor Data Sheet: Technical Data An Energy Efficient Solution by Freescale 3-Axis‚ 12-bit/8-bit MMA8452Q Digital Accelerometer The MMA8452Q is a smart low-power‚ three-axis‚ capacitive micromachined accelerometer with 12 bits of resolution. This accelerometer is packed with embedded functions with flexible user programmable options‚ configurable to two interrupt pins. Embedded interrupt functions allow for overall power
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The history of computer development is often referred to in reference to the different generations of computing devices. A generation refers to the state of improvement in the product development process. This term is also used in the different advancements of new computer technology. With each new generation‚ the circuitry has gotten smaller and more advanced than the previous generation before it. As a result of the miniaturization‚ speed‚ power‚ and computer memory has proportionally increased
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1. Porter’s Five Forces model - Everything2.com everything2.com/title/Porter%2527s+Five+Forces+model * * Elsewhere in this node‚ indestructible expertly explains Porter’s Five Forces model‚ ...First‚ AMD has successfully stolen market share from Intel over the last few ... 2. Let’s Check It Out??!!!: Lets Talk bout Porter’s Five Force! malaygeneration.blogspot.com/.../what-is-five-forces-model-of-porter.ht... * * Dec 15‚ 2008 – The Five Forces model of Porter is
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TUTORIAL SHEET: 1 (Module1: Special Theory of Relativity) 1. Describe the Michelson Morley experiment and discuss the importance of its negative result. 2. Calculate the fringe shift in Michelson-Morley experiment. Given that: [pic]‚ [pic]‚ [pic]‚ and [pic]. 3. State the fundamental postulates of Einstein special theory of relativity and deduce from them the Lorentz Transformation Equations . 4. Explain relativistic length contraction and time dilation in special theory of relativity
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Lasers and Their Uses We have all at some point in our lives used or seen someone use a laser. They are used in compact disc players for stereos or computers‚ laser surgery‚ laser printers‚ holography‚ cutting and borring metals‚ communication‚ bar-code scanners‚ etc. Over the past three decades’ lasers have become a tool used daily by many people and they have become very useful in scientific research. As you can see lasers are a very useful and important tool which is why I have chosen this
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Introduction: Samsung Electronics Company‚ henceforth called “Samsung” in this case‚ was established in 1969 to manufacture black-and-white TV sets. In 1974‚ Samsung‚ which was a producer of low-end consumer electronics‚ purchased Korea Semiconductor Company and began its semiconductor industry. Under the leadership of the chairman of Samsung Group‚ Kun He Lee‚ Samsung has risen‚ with a remarkable speed‚ to become the world’s leading memory producer‚ ranking 2nd just behind Intel. Meanwhile‚ Samsung used the
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Bibliography: 1. Semiconductor Devices: Physics and Technology‚ S. M. Sze.‚ New York: Wiley‚ 1985; 2nd ed.‚ 2001‚ ISBN 0-471-33372-7. 2. Physics of Semiconductor Devices‚ S. M. Sze.‚ New York: Wiley‚ 1969‚ ISBN 0-471-84290-7 . 3. Solid State Physics‚ Hook‚ J. R.; H. E. Hall.‚ Wiley‚ 2001‚ ISBN 0-471-92805-4. 4. The Essential Guide to Semiconductors‚ Turley‚ Jim (2002). ‚ Prentice Hall PTR‚ ISBN 0-13-046404-X. 5. Fundamentals of Semiconductors: Physics and Materials Properties
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