ASCII

The standard, 7-bit ASCII code for text dates back to 1967 when nearly all computer users spoke English. A 7-bit code gives only 128 unique characters. Unicode uses 16 bits and includes the character sets of many languages. (The ASCII codes comprise the first 128 characters of Unicode). The original ASCII code, shown here, is still widely used by text editors like Notepad and in applications like HTML and email.

The US ASCII Code
Non-printing characters Printing characters Printing characters
Symbol Dec Binary Hex Symbol Dec Binary Hex Symbol Dec Binary Hex
nul 0 0000000 00 space 32 0100000 20 P 80 1010000 50
soh 1 0000001 01 ! 33 0100001 21 Q 81 1010001 51
stx 2 0000010 02 " 34 0100010 22 R 82 1010010 52
etx 3 0000011 03 # 35 0100011 23 S 83 1010011 53
eot 4 0000100 04 $ 36 0100100 24 T 84 1010100 54
enq 5 0000101 05 % 37 0100101 25 U 85 1010101 55
ack 6 0000110 06 & 38 0100110 26 V 86 1010110 56
bel 7 0000111 07 ' 39 0100111 27 W 87 1010111 57
bs 8 0001000 08 ( 40 0101000 28 X 88 1011000 58
ht 9 0001001 09 ) 41 0101001 29 Y 89 1011001 59
lf 10 0001010 0A * 42 0101010 2A Z 90 1011010 5A
vt 11 0001011 0B + 43 0101011 2B [ 91 1011011 5B
ff 12 0001100 0C , 44 0101100 2C \ 92 1011100 5C
cr 13 0001101 0D - 45 0101101 2D ] 93 1011101 5D
so 14 0001110 0E . 46 0101110 2E ^ 94 1011110 5E
si 15 0001111 0F / 47 0101111 2F _ 95 1011111 5F
dle 16 0010000 10 0 48 0110000 30 ` 96 1100000 60
dc1 17 0010001 11 1 49 0110001 31 a 97 1100001 61
dc2 18 0010010 12 2 50 0110010 32 b 98 1100010 62
dc3 19 0010011 13 3 51 0110011 33 c 99 1100011 63
dc4 20 0010100 14 4 52 0110100 34 d 100 1100100 64
nak 21 0010101 15 5 53 0110101 35 e 101 1100101 65
syn 22 0010110 16 6 54 0110110 36 f 102 1100110 66
etb 23 0010111 17 7 55 0110111 37 g 103 1100111 67
can 24 0011000 18 8 56 0111000 38 h 104 1101000 68
em 25 0011001 19 9 57 0111001 39 i 105 1101001 69
sub 26 0011010 1A : 58 0111010 3A j 106 1101010 6A
exc 27 0011011 1B ; 59 0111011 3B k 107 1101011 6B
fs 28 0011100 1C < 60 0111100 3C l 108 1101100 6C
gs 29 0011101 1D = 61 0111101 3D m 109 1101101 6D
rs 30 0011110 1E > 62 0111110 3E n 110 1101110 6E
us 31 0011111 1F ? 63 0111111 3F o 111 1101111 6F
@ 64 1000000 40 p 112 1110000 70
A 65 1000001 41 q 113 1110001 71
B 66 1000010 42 r 114 1110010 72
C 67 1000011 43 s 115 1110011 73
D 68 1000100 44 t 116 1110100 74
E 69 1000101 45 u 117 1110101 75
F 70 1000110 46 v 118 1110110 76
G 71 1000111 47 w 119 1110111 77
H 72 1001000 48 x 120 1111000 78
I 73 1001001 49 y 121 1111001 79
J 74 1001010 4A z 122 1111010 7A
K 75 1001011 4B { 123 1111011 7B
L 76 1001100 4C | 124 1111100 7C
M 77 1001101 4D } 125 1111101 7D
N 78 1001110 4E ~ 126 1111110 7E
O 79 1001111 4F  127 1111111 7F
= no printing symbol assigned

Disclaimer: The views and opinions expressed on unofficial pages of California State University, Dominguez Hills faculty, staff or students are strictly those of the page authors. The content of these pages has not been reviewed or approved by California State University, Dominguez Hills.