Typewriter

The typewriter is an  instrument  for the production  of printed letters by manual operation. SHOLES invented the first practical commercial typewriter in the U.S. in ,1873, and  it was manufactured by the gunsmith Philo Remington in 1874. It only worked  with  capital letters; a shift-key model appeared in 1878 and it was widely used in 1935. The electric typewriter came into operation in the 1960s. The type levers were replaced with type-surfaced metal ball that moves rapidly across a stationary paper holder; the metal ball was later replaced by a daisy wheel. Data was stored  and reproduced automatically by Computerized typewriters .They can  also function as a personal computer printer. In general typewriters have been replaced by word processors or by computers using word processing programs.  

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