COMP 3000 2011 Week 1 Notes: Difference between revisions
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'''OS''': set of code to change computer you have into the computer you want to program, provides a virtual/abstract machine to program hardware (certain abstractions imply certain implementation strategies) | '''OS''': set of code to change computer you have into the computer you want to program, provides a virtual/abstract machine to program hardware (certain abstractions imply certain implementation strategies) | ||
'''Linux''' | |||
'''Kernels''': on Android, dvr, home router, servers, the cloud (amazon, facebook, google...) | '''Kernels''': on Android, dvr, home router, servers, the cloud (amazon, facebook, google...) | ||
Revision as of 03:51, 18 October 2011
Basics
Complexity: computers are complicated, big, fast etc.
UNIX: made to share a computer between multiple people
Need to share:
- Disc files: block interface abstraction
- Memory: divide it up (virtual memory)
- CPU: take turns and cut of those that are being hogs
- Network: divide communication into packets (identify with IP for computer and port for the program)
OS: set of code to change computer you have into the computer you want to program, provides a virtual/abstract machine to program hardware (certain abstractions imply certain implementation strategies)
Linux
Kernels: on Android, dvr, home router, servers, the cloud (amazon, facebook, google...)