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introduction of dos 3.1 the first operating system
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the first apple system
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the secound apple system
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The third apple system
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the fourth apple system
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The 6 apple system
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Apple introduce system 7
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Apple allows other computer companies to clone its computer by announcing its licensed the Macintosh operating system rights to Radius
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Apple introduce Mac OS 8
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Apple buys NeXT Software Inc. for $400 million and acquires Steve Jobs, Apples cofounder, as a consultant.
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Apple introduces Mac OS 9.
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Apple introduces Mac OS X 10.0 code named Cheetah
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Apple introduces Mac OS X 10.1 code named Puma
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Apple introduces Mac OS X 10.2 code named Jaguar
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Apple introduces Mac OS X 10.3 code named Panther
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Apple introduces Mac OS X 10.4 code named Tiger at the WWDC
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Apple introduces Mac OS X 10.5 code named Leopard
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Apple introduces Mac OS X 10.6 code named Snow Leopard and MobileMe at the WWDC