Letter: On This Day.
Over 50 feet long, eight feet high and weighing almost five tons, the Mark I took less than a second to solve an addition problem but about six seconds for multiplication and twice as long for division - far slower than any pocket calculator today.
Later in the decade, IBM introduced the Selective Sequence Electronic Calculator as the company's first large-scale digital calculating machine, the successful 604 Electronic Calculating Punch - 5,600 of which were built in a ten year period - and the card-programmed Electronic Calculator, the first IBM product designed for computation centres.
Also on This Day: 1492: a false sighting of landcaused Christopher Columbus to change course and miss Florida; 1806: the first carbon paper was patented by Ralph Wedgewood; 1871: The Great Chicago Fire started, resulting in more than 250 deaths;1892: death of poet Alfred Tennyson; 1922: The first royal radio broadcast took place, with the Prince of Wales; 1949: The German Democratic Republic of East Germany was established; 1986: The Independent was published for the first time.
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|Publication:||The Birmingham Post (England)|
|Date:||Oct 7, 2002|
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