1941    Konrad Zuse presents the Z3, the world's first working programmable, fully automatic computer, in Berlin.

1969    The first-ever computer-to-computer link is established on ARPANET, the precursor to the Internet.

1978    The first computer bulletin board system is created (CBBS in Chicago, Illinois).

1987    Unabomber: In Salt Lake City, a bomb explodes in a computer store.

1997    IBM Deep Blue, a chess-playing supercomputer, defeats Garry Kasparov in the last game of the rematch, becoming the first computer to beat a world-champion chess player in a classic match format.