Tech Time Warp of the Week: The 50-Pound Portable PC, 1977 http://ifttt.com/images/no_image_card.png

IBM sparked a revolution in personal computing when it unveiled the IBM PC in 1981. But the IBM PC wasn't IBM's first personal computer. Six years earlier, Big Blue unleashed a machine called the IBM 5100. It wasn't just personal. It was also portable -- at least by the standards of the day. It weighed 50 pounds, and it didn't work unless you plugged it into the wall.



via Wired Top Stories http://feeds.wired.com/~r/wired/index/~3/5BGa6K3Owgs/