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7 Cards in this Set
- Front
- Back
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Purpose of Operating Systems
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- Suite of programs that manage the hardware of the system
- The hardware is controlled through the software - A platform on which applications can run - Provides user interface which allows for communication between the user and hardware - Handles communication with protocols and translates code with compilers and interpreters - Has a lot of utility programs |
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Batch Operating System
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- Data is collected and input over a period of time
- Input is stored as, 'jobs', then later collected as, 'batches'. - Data is only processed once all input is collected - Therefore large amounts of data is processed - There is no need for human intervention during processing - There is no need for instant response to input - The data is of similar nature, therefore requires similar processing |
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Real-Time Operating System
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- Data is processed immediately, therefore the system response is immediate to changes in input
- The output affects the next input - The computer must respond within a set time limit |
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Single-User Operating System
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- Only one user can access the system at a time
- The user is allocated certain rights - User files are kept separate |
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Multi-User Operating System
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- Multiple users can access the system simultaneously
- Each user accesses the system uniquely - Each user is allocated certain rights - User files are kept separate |
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Multi-Tasking Operating System
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- The operating system can do multiple tasks simultaneously
- The tasks will open in separate windows - Each task will be given a certain amount of processing time until it moving onto the next - E.g. Listening to music while writing an essay - A typical PC has a multi-tasking operating system |
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Distributed System
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- File storage or processing is shared between different computers in different locations that make up the whole system
- The user does not know the exact physical location of the data that they are accessing - This speeds up access to files as all the data does not have to pass through a single point |
