Page 196 - New Medley 5 Semester 2

VALUE CORNER • Responsibility

Have you heard how the visually challenged persons read and write? Such
persons learn a coded language which was developed by Louis Braille. In this

language, numbers and letters are coded using a set of 6 dots (2 dots in each
of 3 rows) which was vary in arrangement. Here is a chart of letters of English
alphabet coded in Braille.

A B C D E F G H I

J K L M N O P Q R

S T U V W X Y Z

Dots are slightly raised in each array. Observe the given chart and prepare a

tally table.

Code having Tally marks No. of letters

1 raised dot

2 raised dots

3 raised dots

4 raised dots
5 raised dots

Make a bar graph using the table you prepared.

(a) How many letters are coded with 3 raised dots?

(b) How many raised dots are used in maximum number of letters?

(c) What is the difference between the letters which have 2 raised dots
and 4 raised dots?

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