slate and stylus wikipedia - EAS
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See all on Wikipediahttps://en.wikipedia.org/wiki/Slate_and_stylusThe slate and stylus are tools used by blind persons to write text that they can read without assistance. Invented by Charles Barbier as the tool for writing letters that could be read by touch, the slate and stylus allow for a quick, easy, convenient and constant method of making embossed printing for
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See moreThe basic design of the slate consists of two pieces of metal, plastic or wood fastened together with a hinge at one side.
The back part of the slate is solid with slight depressions spaced in braille cells of six dots each. The...
See moreWriting is accomplished by placing a piece of heavy paper in the slate, aligning it correctly and closing the slate. The pins in the back of the slate puncture or pinch the paper securely between the two halves of the slate.
The person writing begins...
See moreIn addition to the system devised by Louis Braille, a number of other methods for blind people to read and/or write on paper have been used. One of the most popular was the English system of Dr. William Moon invented in 1845. The English/Moon system or
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1. ^ Alpha Chi Omega (1908)
2. ^ Shrady, et al.(1902)
3. ^ Note: Different references assign invention of the slate and stylus to either Barbier or Braille. However, Braille (1829) credits Barbier with...
See more• How Tactile Writing Began at www.bpa.org Blind Persons' Association
• Braille Slate Simulator...
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A fact from Slate and stylus appeared on Wikipedia's Main Page in the Did you know? column on 6 April 2008, and was viewed approximately 2,365 times (check views).The text of the entry was as follows: Did you know... that slate and stylus were invented by Louis Braille and Charles Barbier for blind people to write braille?; A record of the entry may be seen at Wikipedia:Recent …
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- https://en.wikipedia.org/wiki/Stylus
A stylus (plural styli or styluses ) is a writing utensil or a small tool for some other form of marking or shaping, for example, in pottery. It can also be a computer accessory that is used to assist in navigating or providing more precision when using touchscreens. It usually refers to a narrow elongated staff, similar to a modern ballpoint pen. Many styluses are heavily curved to be held more easily…
Wikipedia · Text under CC-BY-SA license - https://en.wikipedia.org/wiki/Slate
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism.It is the finest grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of …
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