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IBM, which sponsored the invention of the electric typewriter in the 1930s, developed on the most popular business machines - the IBM Selectric in 1961. Rather than use keys, the Selectric used a rotating ball to type the characters. It could be easily removed to change the font.
IBM is very proud of its role in the U.S. space program that put a man on the moon. Dr. Helmut Hoelzer (left) and Dr. Randolph Hoelker make orbital calculations at the Marshall Space Center in Huntsville, Alabama. Flights of the 30 million horsepower Saturn rocket were simulated on an IBM 7090.
IBM introduced the first floppy disk in 1971. The memory disk was 8 inches in diameter and could hold 80KB of memory. It did not work well when dirty so IBM put covers on them.