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Late
1970s � other networks built, such as Tymnet
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and
THEORYNET (academic)
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4/12/79
� Kevin MacKenzie invents the �emoticon�
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:-)
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10/27/80
� first accidental virus shuts down
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ARPANET
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1984 �
number of hosts breaks 1000, William
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Gibson
coins �cyberspace�
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