Page 64 - Cs_withBlue_J_C11_Flipbook
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Decimal Octal Hexadecimal Binary Value
113 161 071 01110001 q
114 162 072 01110010 r
115 163 073 01110011 s
116 164 074 01110100 t
117 165 075 01110101 u
118 166 076 01110110 v
119 167 077 01110111 w
120 170 078 01111000 x
121 171 079 01111001 y
122 172 07A 01111010 z
123 173 07B 01111011 {
124 174 07C 01111100 |
125 175 07D 01111101 }
126 176 07E 01111110 ~
127 177 07F 01111111 DEL
Note: • The ASCII code characters between 0 to 31 are unprintable control characters used to control hardware.
• 32 represents space which is included in printable characters.
• 33 to 126 are all printable characters.
• 127 represents delete which is a control character.
ASCII representation of a word is given with an example:
Example 1: Represent INDIA in binary code.
ASCII code of I = 73
N = 78
D = 68
I = 73
A = 65
Representing in binary notation 1001001 1001110 1000100 1001001 1000001.
Advantages of ASCII code are as follows:
• It is universally accepted. Unicode coding which has now replaced ASCII coding is compatible with it.
• It has a character encoding system.
• The codes for letters and digits are well adapted to different programming languages.
Disadvantage of ASCII code is as follows:
• It has a limited character set which can represent only the English language but is incapable of representing other
languages of the world.
To eliminate this drawback, ASCII 8 character encoding was introduced in 1980 which was an extended version of
8
ASCII 7. It could represent 2 or 256 characters (ranging from 0 to 255) which included letters used in other European
countries like Latin, graphics, signs, etc.
2.3.3 ISCII (Indian Script Code for Information Interchange)
Introduced in the year 1991 by the Bureau of Indian standards, this encoding scheme was designed to represent the
character set of different Indian languages. It follows a 8-bit encoding schema containing 256 characters. The first 128
characters (0 to 127) are similar to the ASCII coding scheme.
6262 Touchpad Computer Science-XI

