operating system

operating system

1. managing resource

   • peripherals
     • input and output devices
       • mouse
       • keyboard
     • drivers
       • software uses to map commands to the individual peripherals
       • HP printer
       • epson printer
   • processes
     • processes more than 4 billion inst/ps
     • more than memory and secondary storage
   • memory
     • RAM
   • printing
     • spooling
       • no worries of printing queue or unplugged or out of ink
   • backing store
     • cloud
     • tape or disk
   • file compression
     • fewer bytes
       • allow more data
   • security

2. desktop devices

   • windows
   • mac os
   • linux
   • unix

3. portable devices

   • android
   • ios
   • chrome os