short note on alternative technology available for the blind

 TILL NOW , VERY LIMITED RESOURSES WERE AVAILABLE FOR BLIND , THE MOST POPULAR ONE BEING THE TRADITIONAL BRAILLE . THE BRAILLE  SYSTEM , WHICH ENABLES THE BLIND TO READ AND WRITE , USES PATTERN OF RAISED DOTS TO REPRESENT LETTERS AND NUMERALS . WITH ADVANCEMENT OF THECNOLOGY , THERE IS A MARKED IMPROVEMENT IN THE KIND OF MATERIAL AVAILABLE FOR BLIND .

1 )  DEVICES SUCH AS PORTABLE BRAILLE TYPEWRITER , TALKING CALCULATOR , TALKING CLOCK , AUDIO   DICTIONARY , DICTAPHONE , DRAWINGS THAT ARE RAISED , AND AUDIO MEASURING DEVICES ARE VERY USEFUL TO THE BLIND .

2 )  PERSONALISED BLIND-FRIENDLY COMPUTERS EQUIPTED WITH SOFTWARE SPECIALLY SUITED FOR THE BLIND ARE AVAILABLE TODAY . THESE MAKE ACCESING INFORMATION AVAILABLE ON THE INTERNET MUCH EASIER FOR THE BLIND . READING SOFTWARE LIKE JAWS AND KURZWEIL 3000 ARE ALSO VERY USEFUL FOR THE BLIND .

3 ) SPECIAL KEYBOARDS BASED ON THE BRAILLE SYSTEM , WITH CHARACTERS EMBOSSED ON THEM , ARE AVAILABLE FOR THE BLIND . SPECIAL SCANNERS AND PRINTERS ARE ALSO AVAILABLE TODAY , WHICH HAVE MADE ACCESSING INFORMATION VERY EASY FOR THE BLIND .

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@Srivastan C 
    I would sincerely be pleased if you would not post answers directly from the textbook.
 
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i think that u should write this answer by urself and stop writing bu seeing in the book
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