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Interested in disability history? Check out what happened Today in AT History!

January 10

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  • 1885 - William Seward Burroughs files a patent for the first practical adding machine. Today, calculators are particularly useful for people with math-related learning disabilities, and printing calculators are useful for people who have trouble writing by hand. [1] [2]


References

  1. William Seward Burroughs. National Inventors Hall of Fame. Accessed March 7, 2008.
  2. Calculating-Machine. U.S. Patent #388116.