The following charts are ASCII code in decimal (0-255) and in hexadecimal (00-FF). The first 128 characters (0-127) are standard 7-bit ASCII. The next 128 (128-255) are extended ASCII as found in the first IBM PC. To view charts with hex first, see hex chart. See ASCII, hex and hex editor.
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| ASCII Code (Decimal) |
| The ASCII characters are numbered from 0 to 255. The chart below shows their designation in hexadecimal numbers. |
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| ASCII Code (Hexadecimal) |
| The ASCII characters are numbered from 00 to FF in hexadecimal. Note that 0 to 9 are the same in both numbering systems. To understand hex numbers, see hex. |
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