In 1890 – The U.S. Census Bureau began using Herman Hollerith’s tabulating machine for the first time. This gave Hollerith the basis to later found his Tabulating Machine Company, which was one of four companies that merged to form IBM.
In 1944 – The Colossus Mark 2 was put into service at Bletchley Park in Great Britain, just in time for the invasion at Normandy.
In 1999 – The Windows version of music-sharing program Napster was released.
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