Topic 3 - Computer Systems

Topic 3 - Computer Systems

1. managing resources and providing user interface

   • Manages peripherals such as input and output devices
     • Communicates with and sends data output to a printer/monitor/other valid output device
     • Communicates with and receives data input to a keyboard/mouse/other valid input device
   • Manages printing using spooling
     • Data is stored on hard disc/in memory/stored in a queue
     • Document is printed when printer is free/in correct order
   • Manages backing store
     • Ensures that data is stored and can be retrieved correctly from any disk drive
     • Creates and maintains a Filing system
   • File compression
   • Disk de-fragmentation
   • Manages memory (RAM)
   • Manages processes
   • Manages security

2. software development environment

   • editor
   • compiler
   • interpreter
   • linker