In 1973 – Bob Metcalfe of the Xerox Palo Alto Research Center wrote a memo on an IBM selectric typewriter, outlining how to connect personal computers to a shared printer. Metcalfe says “If Ethernet was invented in any one memo, by any one person, or on any one day, this was it.”
In 1980 – Namco released an arcade game called Puck-Man. When it was released in the US in October the name was altered to Pac-Man.
In 1990 – Microsoft released Windows 3.0. It featured big improvements in interface and multitasking. It’s Control Panel feature caught the eye of Apple which sued, and lost.
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