ASCII Table

Dec Hex Alt Esc Ascii Character Dec Hex Ascii Character Dec Hex Ascii Character Dec Hex Ascii Character
0 0x00   Ctrl-@ NUL (Null) 32 0x20 [Space] 64 0x40 @ 96 0x60 `
1 0x01 Ctrl-A SOH 33 0x21 ! 65 0x41 A 97 0x61 a
2 0x02 Ctrl-B STX 34 0x22 " 66 0x42 B 98 0x62 b
3 0x03 Ctrl-C ETX 35 0x23 # 67 0x43 C 99 0x63 c
4 0x04 Ctrl-D EOT 36 0x24 $ 68 0x44 D 100 0x64 d
5 0x05 Ctrl-E ENQ 37 0x25 % 69 0x45 E 101 0x65 e
6 0x06 Ctrl-F ACK 38 0x26 & 70 0x46 F 102 0x66 f
7 0x07 Ctrl-G BEL 39 0x27 ' 71 0x47 G 103 0x67 g
8 0x08 Ctrl-H BS Backspace 40 0x28 ( 72 0x48 H 104 0x68 h
9 0x09 Ctrl-I TAB \t 41 0x29 ) 73 0x49 I 105 0x69 i
10 0x0A Ctrl-J LF Line Feed \n 42 0x2A * 74 0x4A J 106 0x6A j
11 0x0B Ctrl-K VT 43 0x2B + 75 0x4B K 107 0x6B k
12 0x0C Ctrl-L FF Form Feed 44 0x2C , 76 0x4C L 108 0x6C l
13 0x0D Ctrl-M CR Carriage Return \r 45 0x2D - 77 0x4D M 109 0x6D m
14 0x0E Ctrl-N SO 46 0x2E . 78 0x4E N 110 0x6E n
15 0x0F Ctrl-O SI 47 0x2F / 79 0x4F O 111 0x6F o
16 0x10 Ctrl-P DLE 48 0x30 0 80 0x50 P 112 0x70 p
17 0x11 Ctrl-Q DC1 49 0x31 1 81 0x51 Q 113 0x71 q
18 0x12 Ctrl-R DC2 50 0x32 2 82 0x52 R 114 0x72 r
19 0x13 Ctrl-S DC3 51 0x33 3 83 0x53 S 115 0x73 s
20 0x14 Ctrl-T DC4 52 0x34 4 84 0x54 T 116 0x74 t
21 0x15 § Ctrl-U NAK 53 0x35 5 85 0x55 U 117 0x75 u
22 0x16 Ctrl-V SYN 54 0x36 6 86 0x56 V 118 0x76 v
23 0x17 Ctrl-W ETB 55 0x37 7 87 0x57 W 119 0x77 w
24 0x18 Ctrl-X CAN 56 0x38 8 88 0x58 X 120 0x78 x
25 0x19 Ctrl-Y EM 57 0x39 9 89 0x59 Y 121 0x79 y
26 0x1A Ctrl-Z SUB (EOF) 58 0x3A : 90 0x5A Z 122 0x7A z
27 0x1B Ctrl-[ ESC (Escape) 59 0x3B ; 91 0x5B [ 123 0x7B {
28 0x1C Ctrl-/ FS 60 0x3C < 92 0x5C \ 124 0x7C |
29 0x1D Ctrl-] GS 61 0x3D = 93 0x5D ] 125 0x7D }
30 0x1E Ctrl-^ RS 62 0x3E > 94 0x5E ^ 126 0x7E ~
31 0x1F Ctrl-_ US 63 0x3F ? 95 0x5F _ 127 0x7F DEL

ASCII is character encoding standard used to store characters and basic punctuation as numeric values.

In Windows, hold down the ALT key, and type the code:
e.g. press ALT + on the numeric keypad 9+3, then release ALT to produce a ']' which is ASCII code 93.
or press ALT + on the numeric keypad 1, then release ALT to get ASCII code 1 which displays as (actually Unicode U+263A).

The control codes from 1 to 31 are not normally visible, so on Windows when entered using an ALT+No., they will be auto-replaced with the Alt characters shown above.

Control codes can be also entered using an Esc or Ctrl key combination, e.g. Ctrl+H will backspace over the last character typed. These keys work under most operating systems, but under Windows Ctrl+M will enter or exit 'Mark Mode' rather than produce the expected CR/Carriage Return. You may notice that these Ctrl Key shortcuts match the 3rd column of ASCII codes in the table.

Windows CR+LF Line Ending is Chr(13) followed by Chr(10) — in PowerShell `r`n.
Linux and MacOS LF Line Ending is Chr(10) — very early versions of Mac OSX did use CR/Chr(13)

ASCII codes from 0 - 127 are identical to Unicode. Adding 32 (or flipping the sixth bit) will convert an upper case letter to lower case.
Extended ASCII codes from 128 - 256 are no longer in use because they vary by country/locale.

“Why shouldn’t we give our teachers a license to obtain software, all software, any software, for nothing? Does anyone demand a licensing fee, each time a child is taught the alphabet?” ~ William Gibson

Related character codes:

Convert between Binary, Decimal, Hex and Base 36.
ANSI Colours
GenChr.cmd - Generate an ASCII/Unicode character.
man ascii will produce an ascii table on most unix systems.


 
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