Difference between revisions of "ASCII"

From Free Knowledge Base- The DUCK Project: information for everyone
Jump to: navigation, search
m (→‎Text ASCII Table)
m (→‎Text ASCII Table)
Line 105: Line 105:
 
| 33||21||!||||97||61||a
 
| 33||21||!||||97||61||a
 
|-
 
|-
−
| 34||22||\"||||98||62||b
+
| 34||22||"||||98||62||b
 
|-
 
|-
 
| 35||23||#||||99||63||c
 
| 35||23||#||||99||63||c

Revision as of 06:03, 14 April 2008

ASCII - (pronounced /ˈæski/) The American Standard Code for Information Interchange is a standard seven-bit code that was proposed by ANSI in 1963, and finalized in 1968, and maybe a guy named Robert W. Bemer was involved in the process. ASCII specifies a correspondence between digital bit patterns and character symbols. The purpose is to create a standard for computers, and other data processing equipment. ASCII developed from telegraphic codes and its first commercial use was as a seven-bit teleprinter code promoted by Bell data services.

The standard ASCII character set uses 7-bit code and consists of 128 decimal numbers ranging from zero through 127 assigned to letters, numbers, punctuation marks, and the most common special characters. The Extended ASCII Character Set also consists of 128 decimal numbers and ranges from 128 through 255 representing additional special, mathematical, graphic, and foreign characters. On common 8-bit systems, an 8th parity bit compliments the patterns of seven binary digits (a range of 0 to 127 decimal) which represent each ASCII character.

The later added extended ASCII characters were added to the original ASCII character set as the result of the computer industry specifically. MS-DOS uses a superset of ASCII called extended ASCII or high ASCII. The extended character set uses 8-bit encoding rather than 7-bit.

  • control characters: ASCII reserves the first 32 codes (numbers 0–31 decimal) for control characters such as printer control and device control.
  • printable characters: a space, letters, digits, punctuation marks, and printable symbols.
  • extended characters: 8-bit later addition to the original ASCII characters include non-English characters, graphics symbols, and mathematical symbols.

ASCII Table Charts

The website LookupTables has two of the best ASCII table charts available.

Lower ASCII Table

source: http://www.lookuptables.com/

Asciifull.gif

Upper ASCII Table

source: http://www.lookuptables.com/

Extend.gif

Text ASCII Table

This chart is a text table rather than a graphic illustration.

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

 

 

Retrieved from "https://wiki.robotz.com/index.php?title=ASCII&oldid=2850"