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Computer Science E-1 Lecture 1: Hardware

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Power Supply

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BIOS

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CMOS

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POST

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Memory

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Peripherals

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http://www.youtube.com/watch? v=rdIWKytq_q4

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Hard drive

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Kernel

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CPU

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Operating Systems

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Keyboard

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Mouse

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http://www.youtube.com/watch? v=74W-QNudReo

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Lectures

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Recaps

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Sections

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Problem Sets

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Discuss

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Exams

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Final Project

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Part I: Hardware

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Part II: Internet

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Part III: Security

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Part IV: Software Development

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01010100101010010101000010101010 01010101001010101011101011010101 00010101010110100101001001011110 10100111010100101001001010100100 01010100101010101001010010010101 00100101010010101010010101010101 01010001010010110010010010010100

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Do you like cats?

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How much do you like cats?

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__ __ __ __ 1000 100 10 1

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__ __ __ __ 8 4 2 1

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0

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0 1

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00 01 10

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(1 × 2) + (0 × 1) = 2 + 0 = 2

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00 01 10 11

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(1 × 2) + (1 × 1) = 2 + 1 = 3

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000 001 011 100

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(1 × 4) + (0 × 2) + (0 × 1) = 4

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000 001 011 100 101

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(1 × 4) + (0 × 2) + (1 × 1) = 5

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10110

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0011 + 0110

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________________________

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________________________

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________________________

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________________________

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________________________

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There are 10 types of people in the world: those who understand binary and those who don’t.

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Character encodings

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ASCII

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CS E-1

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67 83 32 69 45 49

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01000011 01010011 00100000 01000101 00101101 00110001

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• byte • kilobyte • megabyte • gigabyte • terabyte • ...

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What chair is everyone sitting in?

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1. Ask the person to your left where he/she is sitting 2. If there is no one to your left, say “one” 3. Add one to the answer of the person to your left, and say it out loud

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Computer Science E-1 Lecture 1: Hardware