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Konkrete Maschinen
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@igorwhiletrue
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Disclaimer
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Computers!!! How do they work?
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Quantum Electrodynamics
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• A photon goes from one place and time to another place and time. • An electron goes from one place and time to another place and time. • An electron emits or absorbs a photon at a certain place and time.
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Particle-wave duality
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Basic Quantum Physics
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Atoms
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Molecules
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Conductivity
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• Metals • Gold • Lose all the electrons
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Circuits
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Logic Gates
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AND OR
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AND OR NOR
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NAND
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Transistors
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(it’s a switch controlled by current)
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Silicon is a semiconductor
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Binary Adder
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XNOR NAND
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XOR XOR AND OR NOR
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Flip-Flops
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Memory
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Shitloads of flip-flops
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16GB = 64 billion transistors
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Clock
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Crystal oscillator
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Frequency divider
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Addressing
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Bus
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Control
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Store instructions in memory
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Use a clock to drive an increment thing
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That indexes into memory to fetch instructions
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Decoder on the instructions
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Then address either an adder or whatever
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It’s a CPU!
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Modern CPU has 5 billion transistors
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Transistor size 28 nm
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~84 atoms across WHEEEEEEE
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Data encoding
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UTF-8
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Operating System
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Assembly
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Go talk to Nicolas about that
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Integrated Circuit
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That’s how computers work.
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Questions?