Operating Systems

Operating Systems

1. CPU

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

2. Interrupts

   • Software
     • Triggered by programs
   • Hardware
     • Triggered by keyboards, mice etc
   • Pauses currently running processes to run specific code

3. Memory (RAM)

   • Splits memory into pages to prevent programs from reading eachother's data

4. Backing Store

   • Manages backups of important data
   • Cloud
   • Local

5. Peripherals

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

6. Security

   • Authenticates users and prevents access to restricted files