ASCII is a 7-bit code that assigns numeric values to letters, numbers, and other characters to allow computers to process text. It was developed in 1963 and most computers now use ASCII to represent text internally and allow data transfer between devices. The ASCII code table maps binary values to corresponding characters, allowing computers to convert between binary and visible text. While ASCII enabled basic text processing, it is limited to 127 or 255 characters and only supports the standard English language characters.

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SCHOOL Of ENGINEERING
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DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
REPRESENTATION OFASCII - CODE
Presenlcd By.
Kaniksha R
20141UEL10
Ill - B.E- ECE

2. Ascii code

3. What is ASCII ?
ASCII Is an Industry standard c:ode, developed by the
American National Standards Institute (ANSI) and published
In 1963.
ASCII is a seven-bit code (a range of O to 127 decimal)
which assigns a binary value to letters, numbers, and other
characters. (Nowadays most computer work with 6bit-code. which
can represent 256 different values)
ASCII codes represent text and control characters In
computers, communications equipment, and other devices
that work with text.
o Most computers use ASCll codes to represent text, which
makes It possible to transfer data from one computer to
another.

4. D Computers can internally manage only binary data
like Os (zeros) and ls (ones).
D Computer use an ASCIT table to convert binary data
Into letters or characters, so we can see visually.
Tl''t lile. data
101000100010100
111100001010010
____
10101010001oj
..,
-
Convert
binary
data to
characters
Fr:-BCDEF11
1
I~
~ dcfg I
--=
l

5. OWithout ASCII code....
. . . . . 1 -
, : .. I · .•
.· .~ -
~
I
What
the
heck ..?
OASCII code table
http://www.ascii-code.com/
•

6. ASCII T
1
able
AMERICAN STANDARD CODE FOR INFORI
MATI
ION
IINTERCHANGE(,
ASCIII)
~c ~ JC Oct Char DK t!ex Oo Char Dec ~ Dt-i CbA,r Dec. Hex D
el Char
0 0 n .Kl ~ 61 q ~ 60 ii10
J. 1 3 lil :u 411 I 6j "l gJ 61 li'I a
2 l' J M n :z • 11!',6" t!:tl 9! 61 ll-12 II
3 ) l :I~ 11 ;!:J • !ll :ill i9 lGJI U) C
. 4 ~ :u 2'1
'" $ ta "4 100 f=& 144 t:I
.,.
Si !$ c
... Ji 25 41 ,., i'i ~s JOI ~ l45 ~
6 ti n 1.fi 4!i
' 70 &ti P' Im ~ 'U I
.,
' ~ :i, 41
,. 'H 4:, {i !01 ~'1 U ,7 Q
~. 1B ii ~ a so
• )'} ill H 104 A J ,,
9 t n IG] 5 51 I l il cp I la! G9 lS1 i
HJ A llf tl :Z.li. 52 • 74 Q I 105 6.11 :tS2 J
1J !I u II) le. ,1 "'" l~ ill! E 101 16:a U3 ~r
11 c l,C
" lC ,. . Jfj ,c L 1"3. 6C 154 I
H I) u 111.!li :a 55 11
'° M ICl"l ~ 155
'"
21 E ll ~ :HJ 1£ 7! ,If;; ~ 110 61: lS6
"
a l C
J 1F
~· '
f'i '-f 0 111 Er: lSJ Q
]lfj, 10 ;ro ,=;~ so 0 BO !iO p l U 10 J(,g p
n H 21 :i n ii n 1!21 0 1111 11 161 (I
lB Ll so Jl 2 'S2 !21! R. tll n IQ r
u n 5'! I! ! 5l w s H5' "IJ t l 1,
10 u 9 J.; & !:I u, T U6 11 Ui4 l
ll il.5 53
" e 5 )5 m u 117 u l 5 u
:n t6 5,& J5 i:;5 ~ ,. l 111! 116 I & ~
:JJ, ~; !H n 6l , S1 n 'i"J JILi 'U a 1 ..
2• 2 ll i8 Si X 110 JI na ..
25 ' 5iJ "l 9 ~t y 1a ,:o i l .,
26 511 1,1, ~ t m 1A a,: ,
~
, U!i s lfl JI lil I 1ll ~ UJ [
ZS, lC c:, I!' ,. < !H '5C 114 IC n, I
19 ffll J5 61 1D ~ 9.J ~ I Ia TI) u )
30 15. E2 J! l .. 91 !¥ - !16, Ji!; u
:
u IF f cl F 11 ~ ff U7 i1if n1

7. An example of ASCII code of character''$"
~ ~~-:::.] 64 32
~ '.
Blna~--o o1 o
Decimal-·
- - -32
16
I
+
8 4
0100
I
2
I
I
!
4 - 36
1
I
•

8. PUEBLO
/ ~
L
01010000 0I0Iomo1 01000101 01000010 01001100 0100111 1
•

9. ~ ASCII
• Can only represent 127 or 255 characters
• Can only code for the standard English language
characters (not for others like Chinese/Arabic)

10. Thank you