An explanation of the ASCII code table

Source: Internet
Author: User

Label:

An explanation of the ASCII code table

ASCII code can be roughly divided into three parts.
The first part is: ASCII non-printing control characters
The second part is: ASCII printing characters;
The third part: extended ASCII print character keyboard commonly used ASCII code

Part I: ASCII non-printable control character descriptor

The digital 0–31 on the ASCII table are assigned to control characters that control some peripheral devices such as printers. For example, 12 represents a page Break/new page feature. This command instructs the printer to jump to the beginning of the next page. (0-31 in the ASCII code table)

Part Two: ASCII print characters

The digital 32–126 are is assigned to characters that can be found on the keyboard and appears when you view or print the document. The number 127 represents the DELETE command. (32-127 in the ASCII code table)

ASCII Code table 0-127

Bin Dec Hex Abbreviation/character Explain
00000000 0 00 NUL (NULL) Null character
00000001 1 01 SOH (start of headling) Title Start
00000010 2 02 STX (start of text) Body Start
00000011 3 03 ETX (end of text) End of body
00000100 4 04 EOT (end of transmission) Transfer end
00000101 5 05 ENQ (Enquiry) Request
00000110 6 06 ACK (Acknowledge) Receive notification
00000111 7 07 BEL (Bell) Bell
00001000 8 08 BS (BACKSPACE) Backspace
00001001 9 09 HT (Horizontal tab) Horizontal tab
00001010 10 0A LF (NL line feeds, new line) Line Break key
00001011 11 0B VT (Vertical tab) Vertical tab
00001100 12 0C FF (NP form feed, new page) Page Change key
00001101 13 0D CR (carriage return) Enter
00001110 14 0E So (shift out) No switching
00001111 15 0F SI (shift in) Enable Toggle
00010000 16 10 DLE (Data link escape) Data Link Escape
00010001 17 11 DC1 (Device control 1) Device Control 1
00010010 18 12 DC2 (Device Control 2) Device Control 2
00010011 19 13 DC3 (Device control 3) Device Control 3
00010100 20 14 DC4 (Device control 4) Device Control 4
00010101 21st 15 NAK (negative acknowledge) Reject Receive
00010110 22 16 SYN (Synchronous idle) Synchronize Idle
00010111 23 17 ETB (end of trans. Block) End of transfer block
00011000 24 18 CAN (Cancel) Cancel
00011001 25 19 EM (end of Medium) Media interrupt
00011010 26 1 A SUB (substitute) Bench
00011011 27 1 b ESC (Escape) Overflow
00011100 28 1C FS (File separator) File separator
00011101 29 1D GS (Group separator) Grouping characters
00011110 30 1E RS (Record separator) Record separator
00011111 31 1F US (Unit separator) Cell separators
00100000 32 20 (space) Space
00100001 33 21st !
00100010 34 22 "
00100011 35 23 #
00100100 36 24 $
00100101 37 25 %
00100110 38 26 &
00100111 39 27
00101000 40 28 (
00101001 41 29 )
00101010 42 2 A *
00101011 43 2 b +
00101100 44 2 C ,
00101101 45 The -
00101110 46 2E .
00101111 47 2F /
00110000 48 30 0
00110001 49 31 1
00110010 50 32 2
00110011 51 33 3
00110100 52 34 4
00110101 53 35 5
00110110 54 36 6
00110111 55 37 7
00111000 56 38 8
00111001 57 39 9
00111010 58 3 A :
00111011 59 3 b ;
00111100 60 3C <
00111101 61 3D =
00111110 62 3E >
00111111 63 3F ?
01000000 64 40 @
01000001 65 41 A
01000010 66 42 B
01000011 67 43 C
01000100 68 44 D
01000101 69 45 E
01000110 70 46 F
01000111 71 47 G
01001000 72 48 H
01001001 73 49 I
01001010 74 4 A J
01001011 75 4 b K
01001100 76 4C L
01001101 77 4D M
01001110 78 4E N
01001111 79 4F O
01010000 80 50 P
01010001 81 51 Q
01010010 82 52 R
01010011 83 53 S
01010100 84 54 T
01010101 85 55 U
01010110 86 56 V
01010111 87 57 W
01011000 88 58 X
01011001 89 59 Y
01011010 90 5 A Z
01011011 91 5B [
01011100 92 5C \
01011101 93 5D ]
01011110 94 5E ^
01011111 95 5F _
01100000 96 60 `
01100001 97 61 A
01100010 98 62 B
01100011 99 63 C
01100100 100 64 D
01100101 101 65 E
01100110 102 66 F
01100111 103 67 G
01101000 104 68 H
01101001 105 69 I
01101010 106 6A J
01101011 107 6B K
01101100 108 6C L
01101101 109 6D M
01101110 110 6E N
01101111 111 6F O
01110000 112 70 P
01110001 113 71 Q
01110010 114 72 R
01110011 115 73 S
01110100 116 74 T
01110101 117 75 U
01110110 118 76 V
01110111 119 77 W
01111000 120 78 X
01111001 121 79 Y
01111010 122 7A Z
01111011 123 7B {
01111100 124 7C |
01111101 125 7D }
01111110 126 7E ~
01111111 127 7F DEL (delete) Delete

Part III: extending ASCII print characters

Extended ASCII characters satisfy the need for more characters. The extended ASCII contains 128 characters already in ASCII (the digital 0–32 is displayed in), and 128 characters are added, which is a total of 256. Even with these more characters, many languages contain symbols that cannot be compressed into 256 characters. As a result, some variants of ASCII appear to encompass regional characters and symbols. For example, many software programs use ASCII tables (also known as iso8859-1) for languages in North America, Western Europe, Australia, and Africa.

Part IV: Keyboard commonly used ASCII code table

The ASCII table of some non-character keys on the keyboard is also more commonly used, such as directional keys, function keys, control keys and so on.
(Reference ASCII keyboard common key table, as below)

ESC key: Vk_escape (27)
Enter: Vk_return (13)
TAB Key: Vk_tab (9)
Caps Lock key: Vk_capital (20)
SHIFT Key: Vk_shift ($ $)
CTRL key: Vk_control (17)
ALT key: Vk_menu (18)
Space bar: Vk_space ($20/32)
BACKSPACE: Vk_back (8)
Left logo key: Vk_lwin (91)
Right logo key: Vk_lwin (92)
Right mouse shortcut key: Vk_apps (93)
INSERT Key: Vk_insert (45)
HOME Key: Vk_home (36)
Page Up:vk_prior (33)
Pagedown:vk_next (34)
END Key: Vk_end (35)
DELETE Key: Vk_delete (46)
Arrow keys (←): Vk_left (37)
Arrow keys (↑): Vk_up (38)
direction keys (→): vk_right (39)
Arrow keys (↓): Vk_down (40)
F1 key: vk_f1 (112)
F2 key: Vk_f2 (113)
F3 key: Vk_f3 (114)
F4 key: Vk_f4 (115)
F5 key: Vk_f5 (116)
F6 key: Vk_f6 (117)
F7 key: Vk_f7 (118)
F8 key: Vk_f8 (119)
F9 Key: Vk_f9 (120)
F10 Key: VK_F10 (121)
F11 Key: vk_f11 (122)
F12 key: Vk_f12 (123)
NUM LOCK key: Vk_numlock (144)
Keypad 0:VK_NUMPAD0 (96)
Keypad 1:VK_NUMPAD0 (97)
Keypad 2:VK_NUMPAD0 (98)
Keypad 3:VK_NUMPAD0 (99)
Keypad 4:vk_numpad0 (100)
Keypad 5:VK_NUMPAD0 (101)
Keypad 6:VK_NUMPAD0 (102)
Keypad 7:VK_NUMPAD0 (103)
Keypad 8:VK_NUMPAD0 (104)
Keypad 9:VK_NUMPAD0 (105)
Keypad.: Vk_decimal (110)
Numpad *: vk_multiply (106)
Keypad +: vk_multiply (107)
Numpad-: vk_subtract (109)
Numpad/: Vk_divide (111)
Pause Break key: Vk_pause (19)
Scroll Lock key: Vk_scroll (145)

Source: http://www.asciima.com/http://www.asciima.com/ascii/1.html

An explanation of the ASCII code table

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

Tags Index: