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A typewriter by definition is a small machine, either electric or manual, with type keys that produced characters one at a time on a piece of paper inserted around a roller. Typewriters have been largely replaced by personal computers and home printers.
Christopher Sholes
Christopher Sholes was an American mechanical engineer, born on February 14, 1819 in Mooresburg, Pennsylvania, and died on February 17, 1890 in Milwaukee, Wisconsin. He invented the first practical modern typewriter in 1866, with the financial and technical support of his business partners Samuel Soule and Carlos Glidden. Five years, dozens of experiments, and two patents later, Sholes and his associates produced an improved model similar to today's typewriters.
QWERTY
The Sholes typewriter had a type-bar system and the universal keyboard was the machine's novelty, however, the keys jammed easily. To solve the jamming problem, another business associate, James Densmore, suggested splitting up keys for letters commonly used together to slow down typing. This became today's standard "QWERTY" keyboard.
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