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In the 1950s, IBM introduced magnetic tapes to replace punch cards. Mechanical engineer James A. Weidenhammer used a regular vacuum cleaner and baby pants to solve the final hurdles for successful implementation of magnetic tapes.
In 1960 IBM's Stretch computer became the pioneer of computer "multitasking."
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.