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370L2 - EECS/CS 370 Levels of Abstraction in Processor...

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1 EECS/CS 370 Levels of Abstraction in Processor Design Lecture 2
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Levels of abstraction Quantum level?, solid state physics Conductors, Insulators, Semiconductors. Doping silicon to make diodes and transistors. Building simple gates, boolean logic and truth tables Combinatorial logic: muxen, decoders, adders Clocks Sequential logic: latches memory State machines Processor Control : Machine instructions Computer Architecture : defining a set of instructions
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3/18 Start with the materials: Conductors and Insulators Conductor : a material that permits electrical current to flow easily. Lattice of atoms with free electrons Insulator : a material that is a poor conductor of electrical current (see above) Lattice of atoms with strongly held electrons Semi-conductor : a material that can act like a conductor or an insulator depending on conditions.
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4/18 Making a semiconductor using silicon
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5/18 N-type Doping We can help the conductivity by adding atoms of
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