Operating systems

Operating systems

1. Types of Os

   • Wind0ws
   • Linux
   • ios
   • Chrome
   • Mac

2. CPU

   • Multi tasking
     • Splits processor time between different programs, making them appear to run simultaneously
   • Manages processor by allocating time to running processes

3. memory (RAM)

   • Spilts memory into pages to prevent programs from reading eachothers data

4. Interputs

   • software
     • triggered by programs
   • hardware
     • Triggered by keyboards, mice ect

5. backing store

   • Maganages backups of important data
   • cloud
   • local

6. peripherals

   • External hardware devices
   • Drivers used to map OS codes to hardware codes
     • Os needs a driver to work with newer hardware

7. security

   • Authenticates users and prevents access to restricted flies

8. Command line interface

   • An OS also provides a method of interaction that is non-graphical, called the command line interface (CLI).
     • a faster way to get tasks done
     • it is more flexible than a GUI
     • it uses less memory