| Kinds of operating systems |
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| • | Stand-alone
machines – no OS |
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| • | Simple
batch monitors |
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| • | Concurrent
I/O and programs |
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| • | Time-sharing,
multiple users, interactive |
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| • | Servers,
non-stop systems, transaction processing |
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| • | PC’s,
workstations |
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| • | Multiple
processor systems |
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| • | Real-time
systems |
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| • | Embedded
systems |
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