reading-notes

Tif Taylor | Code Fellows

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Read:06b | How Computers Work

Ref: YouTube Playlist

What makes a computer, a computer?

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  • A machine designed to manipulate information
  • Take input / the stuff you’re doing (talking, touching screen, etc)
  • Store & Process info / takes input from memory stores it and processes it
  • Output the results / show games, text, photos, etc or even signals to control robots

Circuits and Logic

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  • Every Input and Output are represented by 1’s and 0’s
  • The computer modifies the input signals with Circuits
  • Circuits modify and process binary information via flipping it to the opposite
  • Circuits use Boolean logic to create its output value
  • Circuits have adders that add bits of info to create larger numbers
  • Smaller computers/circuits are faster because it’s less distance for electricity to travel

Hardware and Software

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  • Hardware: wires, chips, speakers, etc.
  • Software: code, computer programs (apps, games, web pages)
  • Central Processing Unit: master chip to control all other parts of the computer. Has circuits for math and logic, other circuits for send/receive info
  • CPU has different commands to tell it which processor to use (like Add or Store) / talks with the Memory to figure this out
  • Binary is the most basic form of Software / modern sw is converted to binary
  • Operating System is master program manages how software uses the hardware
  • OS can help the memory and CPU know what to do

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