Operating Systems

Operating Systems

1. Distrubuted

   • Found in super-computers
   • Form of parallel Processing
   • Single task is split into smaller tasks and then ran on multiple computers
   • Example: Render Farm

2. Embedded

   • Made for one specific purpose
   • Embedded into other machines
   • Example: ATMs

3. Multi-tasking

   • CPU switches from one operation to another quickly, giving the impression of multi-tasking
   • Runs one operation at a time, and switches back and forth
   • AKA: Time Sharing
   • Allows users to perform more than one task at once
   • Pre-emptive type can take control away from the application
   • Cooperative type wait until the application yeilds to the operating system

4. Multi-user

   • Allows multiple users to use the same applications and files concurrently
   • Each process can access the CPU as they are scheduled
   • Examples: Printing
   • If a virus is on one computer, all of the computers are at risk

5. Real Time

   • Schedules processes to give an accurate ETA
   • Allows for a very fast response
   • Processes can be prioritarised
   • Examples: Fish Tanks

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