A typewriter is a mechanical, electromechanical, or electronic device with a set of "keys" that, when pushed, causes characters to be printed on a medium, usually paper. For much of the 20th century, typewriters were vital tools in business offices and for many professional writers. By the end of the 1980s, word processor applications on personal computers had largely replaced the tasks previously talented with typewriters. Typewriters, however, remain popular in the developing world and between some niche markets.
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