Billions of chips in today s computers , automobiles, cellphones , media cards ,and those cleverkey chain memories are powerless when idle , yet they dispense immense data and instructions at the flick of the switch. They are flash kind of memorychips , a type of electrically erasable and programmable read -only memory also used as DRAM, dynamic random access memory. Non volatility , flash s property , is the most crucial for electronic systems like cell phones to hold instructions and data needed to send , receive calls,and store phone numbers ....etc

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Doping of semiconductors



n doping This involves substituting Si by neighboring elements that contribute excess electrons. For example, small amounts of P or As can substitute Si.
Since P/As have 5 valence electrons, they behave like Si plus an extra electron. This extra electron contributes to electrical conductivity, and with a sufficiently
large number of such dopant atoms, the material can displays metallic conductivity. With smaller amounts, one has extrinsic ....etc

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Presented By
KUMARASWAMY.A


SEMICONDUCTORS & DEVICES
PART 1
MATERIALS
1.1:INTRODUCTION
All of us know how importance of using materials like copper , aluminium etc. in electrical applications. This is because copper aluminum are good conductors. Similarly some materials like glass, wood, paper etc also find wide applications in electrical and electronic applications, these are called insulators. There is also another category of materials whose ability to carry current call ....etc

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Over the years semiconductor devices have set a new trend in the field of electronics and created waves in the existing technology of memory storage. Flash memory which has been in use for long now, is now being replaced by new advents in technology of memory such as Ferro Electric Memory, Magneto resistive Type Memory and Ovonic Unified Memory. This paper contrasts the working of flash kind of memory used in Dynamic “ RAMS with that of the other types mentioned above. In brief, advantages over the flash kind of memory are evaluated a ....etc

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i need a project on semi conductors so that the investigatory project provided by u will help me to start and end my project successfully
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