ASCII Character Code

From SwinBrain

American Standard Code for Information Interchange (ASCII) is a character encoding scheme for the English alphabet. Table 1 shows the ASCII character set. It lists the decimal and hexadecimal values for the symbols that the character set provides. The first thirty two (0 to 31) ASCII characters are called control characters. Descriptions of these control characters are shown in Table 2.

Character Codes

Table 1: ASCII character codes
Dec Hex Sym     Dec Hex Sym     Dec Hex Sym     Dec Hex Sym    
0 00 NUL 32 20 64 40 @ 96 60 `
1 01 SOH 33 21 ! 65 41 A 97 61 a
2 02 STx 34 22 " 66 42 B 98 62 b
3 03 EOT 35 23 # 67 43 C 99 63 c
4 04 EOT 36 24 $ 68 44 D 100 64 d
5 05 ENQ 37 25 % 69 45 E 101 65 e
6 06 ACK 38 26 TAB 70 46 F 102 66 f
7 07 BEL 39 27 ' 71 47 G 103 67 g
8 08 BS 40 28 ( 72 48 H 104 68 h
9 09 HT 41 29 ) 73 49 I 105 69 i
10 0A LF 42 2A * 74 4A J 106 6A j
11 0B VT 43 2B + 75 4B K 107 6B k
12 0C FF 44 2C , 76 4C L 108 6C l
13 0D CR 45 2D - 77 4D M 109 6D m
14 0E SO 46 2E . 78 4E N 110 6E n
15 0F SI 47 2F / 79 4F O 111 6F o
16 10 DLE 48 30 0 80 50 P 112 70 p
17 11 DC1 49 31 1 81 51 Q 113 71 q
18 12 DC2 50 32 2 82 52 R 114 72 r
19 13 DC3 51 33 3 83 53 S 115 73 s
20 14 DC4 52 34 4 84 54 T 116 74 t
21 15 NAK 53 35 5 85 55 U 117 75 u
22 16 SYN 54 36 6 86 56 V 118 76 v
23 17 ETB 55 37 7 87 57 W 119 77 w
24 18 CAN 56 38 8 88 58 X 120 78 x
25 19 EM 57 39 9 89 59 Y 121 79 y
26 1A SUB 58 3A : 90 5A Z 122 7A z
27 1B ESC 59 3B ; 91 5B [ 123 7B {
28 1C FS 60 3C < 92 5C \ 124 7C |
29 1D GS 61 3D = 93 5D ] 125 7D }
30 1E RS 62 3E > 94 5E ^ 126 7E ~
31 1F US 63 3F ? 95 5F _ 127 7F DEL  


Control Codes

Table 2: ASCII control characters
Dec Hex Sym Description
0 00 NUL null
1 01 SOH start of header
2 02 STx start of text
3 03 EOT end of text
4 04 EOT end of transmission
5 05 ENQ enquiry
6 06 ACK acknowledge
7 07 BEL bell
8 08 BS back space
9 09 HT tab
10 0A LF line feed
11 0B VT vertical tab
12 0C FF form feed
13 0D CR carriage return
14 0E SO shift out
15 0F SI shift in
16 10 DLE data link escape
17 11 DC1 device control 1 ( XON )
18 12 DC2 device control 2
19 13 DC3 device control 3 ( XOFF )
20 14 DC4 device control 4
21 15 NAK negative acknowledge
22 16 SYN synch
23 17 ETB end of text block
24 18 CAN cancel
25 19 EM end of medium
26 1A SUB substitute
27 1B ESC escape
28 1C FS file separator
29 1D GS group separator
30 1E RS record separator
31 1F US unit separator


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