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how a computer works

1. parts of a computer

   • cpu
     • stands for central processing unit and known as the brain of the computer
   • graphics card
     • an output device that controls the display of the computer
   • psu
     • power supply unit
   • hard drive disk
     • a data disk
   • mother board
     • connects all parts of the computer together
   • ram
     • stands fro random access memory

2. input and output devices

   • input devices
     • keyboard
     • mouse
     • michrophone
     • controller
   • output devices
     • speakers
     • printer
     • projecter
     • screen