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The earliest computers were mainframe-computerthat lacked any form of Answers.com

Read more: history-of-operating-systems

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11y ago
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9y ago

Operating systems have evolved through a number of distinct phases or generations which corresponds roughly to the decades.

1. The 1940's - First Generations

2. The 1950's - Second Generation

3. The 1960's - Third Generation

4. Fourth Generation

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Q: History and timeline of operating system?
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