140 lines
No EOL
4.6 KiB
Markdown
140 lines
No EOL
4.6 KiB
Markdown
---
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obj: concept
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wiki: https://en.wikipedia.org/wiki/ASCII
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---
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# **American Standard Code for Information Interchange** (ASCII)
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ASCII abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices ([Binary](../../science/math/Binary%20System.md) to Text). Because of technical limitations of computer systems at the time it was invented, ASCII has just 128 code points, of which only 95 are printable characters, which severely limited its scope. Modern computer systems have evolved to use [Unicode](Unicode.md), which has millions of code points, but the first 128 of these are the same as the ASCII set.
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## ASCII Table
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| Dec | Hex | Oct | ASCII |
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| --- | --- | --- | ------- |
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| 0 | 00 | 000 | `NUL` |
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| 1 | 01 | 001 | `SOH` |
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| 2 | 02 | 002 | `STX` |
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| 3 | 03 | 003 | `ETX` |
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| 4 | 04 | 004 | `EOT` |
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| 5 | 05 | 005 | `ENQ` |
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| 6 | 06 | 006 | `ACK` |
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| 7 | 07 | 007 | `BEL` |
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| 8 | 08 | 010 | `BS` |
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| 9 | 09 | 011 | `HT` |
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| 10 | 0A | 012 | `LF` |
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| 11 | 0B | 013 | `VT` |
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| 12 | 0C | 014 | `FF` |
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| 13 | 0D | 015 | `CR` |
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| 14 | 0E | 016 | `SO` |
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| 15 | 0F | 017 | `SI` |
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| 16 | 10 | 020 | `DLE` |
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| 17 | 11 | 021 | `DC1` |
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| 18 | 12 | 022 | `DC2` |
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| 19 | 13 | 023 | `DC3` |
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| 20 | 14 | 024 | `DC4` |
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| 21 | 15 | 025 | `NAK` |
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| 22 | 16 | 026 | `SYN` |
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| 23 | 17 | 027 | `ETB` |
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| 24 | 18 | 030 | `CAN` |
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| 25 | 19 | 031 | `EM` |
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| 26 | 1A | 032 | `SUB` |
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| 27 | 1B | 033 | `ESC` |
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| 28 | 1C | 034 | `FS` |
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| 29 | 1D | 035 | `GS` |
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| 30 | 1E | 036 | `RS` |
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| 31 | 1F | 037 | `US` |
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| 32 | 20 | 040 | `SP` |
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| 33 | 21 | 041 | `!` |
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| 34 | 22 | 042 | `"` |
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| 35 | 23 | 043 | `#` |
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| 36 | 24 | 044 | `$` |
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| 37 | 25 | 045 | `%` |
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| 38 | 26 | 046 | `&` |
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| 39 | 27 | 047 | `'` |
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| 40 | 28 | 050 | `(` |
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| 41 | 29 | 051 | `)` |
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| 42 | 2A | 052 | `*` |
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| 43 | 2B | 053 | `+` |
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| 44 | 2C | 054 | `,` |
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| 45 | 2D | 055 | `-` |
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| 46 | 2E | 056 | `.` |
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| 47 | 2F | 057 | `/` |
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| 48 | 30 | 060 | `0` |
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| 49 | 31 | 061 | `1` |
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| 50 | 32 | 062 | `2` |
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| 51 | 33 | 063 | `3` |
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| 52 | 34 | 064 | `4` |
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| 53 | 35 | 065 | `5` |
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| 54 | 36 | 066 | `6` |
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| 55 | 37 | 067 | `7` |
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| 56 | 38 | 070 | `8` |
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| 57 | 39 | 071 | `9` |
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| 58 | 3A | 072 | `:` |
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| 59 | 3B | 073 | `;` |
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| 60 | 3C | 074 | `<` |
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| 61 | 3D | 075 | `=` |
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| 62 | 3E | 076 | `>` |
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| 63 | 3F | 077 | `?` |
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| 64 | 40 | 100 | `@` |
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| 65 | 41 | 101 | `A` |
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| 66 | 42 | 102 | `B` |
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| 67 | 43 | 103 | `C` |
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| 68 | 44 | 104 | `D` |
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| 69 | 45 | 105 | `E` |
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| 70 | 46 | 106 | `F` |
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| 71 | 47 | 107 | `G` |
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| 72 | 48 | 110 | `H` |
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| 73 | 49 | 111 | `I` |
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| 74 | 4A | 112 | `J` |
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| 75 | 4B | 113 | `K` |
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| 76 | 4C | 114 | `L` |
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| 77 | 4D | 115 | `M` |
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| 78 | 4E | 116 | `N` |
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| 79 | 4F | 117 | `O` |
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| 80 | 50 | 120 | `P` |
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| 81 | 51 | 121 | `Q` |
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| 82 | 52 | 122 | `R` |
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| 83 | 53 | 123 | `S` |
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| 84 | 54 | 124 | `T` |
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| 85 | 55 | 125 | `U` |
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| 86 | 56 | 126 | `V` |
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| 87 | 57 | 127 | `W` |
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| 88 | 58 | 130 | `X` |
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| 89 | 59 | 131 | `Y` |
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| 90 | 5A | 132 | `Z` |
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| 91 | 5B | 133 | `[` |
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| 92 | 5C | 134 | `\` |
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| 93 | 5D | 135 | `]` |
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| 94 | 5E | 136 | `^` |
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| 95 | 5F | 137 | `_` |
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| 96 | 60 | 140 | `` ` `` |
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| 97 | 61 | 141 | `a` |
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| 98 | 62 | 142 | `b` |
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| 99 | 63 | 143 | `c` |
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| 100 | 64 | 144 | `d` |
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| 101 | 65 | 145 | `e` |
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| 102 | 66 | 146 | `f` |
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| 103 | 67 | 147 | `g` |
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| 104 | 68 | 150 | `h` |
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| 105 | 69 | 151 | `i` |
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| 106 | 6A | 152 | `j` |
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| 107 | 6B | 153 | `k` |
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| 108 | 6C | 154 | `l` |
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| 109 | 6D | 155 | `m` |
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| 110 | 6E | 156 | `n` |
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| 111 | 6F | 157 | `o` |
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| 112 | 70 | 160 | `p` |
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| 113 | 71 | 161 | `q` |
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| 114 | 72 | 162 | `r` |
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| 115 | 73 | 163 | `s` |
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| 116 | 74 | 164 | `t` |
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| 117 | 75 | 165 | `u` |
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| 118 | 76 | 166 | `v` |
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| 119 | 77 | 167 | `w` |
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| 120 | 78 | 170 | `x` |
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| 121 | 79 | 171 | `y` |
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| 122 | 7A | 172 | `z` |
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| 123 | 7B | 173 | `{` |
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| 124 | 7C | 174 | `\|` |
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| 125 | 7D | 175 | `}` |
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| 126 | 7E | 176 | `~` |
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| 127 | 7F | 177 | `DEL` | |