F451- Operating Systems

Information on all of the types of operating systems

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Batch OS

  • Data is collected and inputted into system
  • Inputs are stored as 'jobs' to be processed later and collected into batches
  • Processing occurs when all inputs are collected
  • Large amounts of data to be processed
  • Processing carried out from beginning to end without human interaction
  • No need for instant responses to input (not time sensitive)
  • Inputted data is similar in nature and requires similar processing
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Real-Time OS

  • Data is processed instantly and system responds instantly to changes in input
  • Output affects input and occurs before next input
  • Computer responds within set time limit
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Single User OS

  • Allows one user at a time to use system
  • Allocates each user with processing time
  • Keeps user files separate
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Multi User OS

  • Allows more than one user to access system and files simultaneously
  • Users have own unique access to computer
  • Allocates each user with processing time
  • Keeps user files separate
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Multi-tasking OS

  • Allows more than one task to run simultaneously
  • Use of separate windows for each task
  • Each task is given an amount of processing time before going to next (e.g. play music while typing essay)
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Distributed Systems

  • File storage or processing is shared between different computers at different locations, which make up the entire system
  • Users will be unaware of the exact physical location of the data that they are accessing
  • Speeds up access to files because no single place all the information must pass through
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