ASCII (source code)
= ASCII
{c}
<ASCII> is a seven-bit code defining 128 values for control functions and characters, including Latin letters, decimal digits and punctuation. Uppercase A has value 65, <hexadecimal> 41. When stored in an eight-bit <byte> with the high <bit> zero, the remaining seven <bits> carry the <ASCII> value. RFC20 documents this convention for network interchange.<ASCII format for Network Interchange by Vint Cerf>[code table and seven-bit embedding]{ref}
The first 128 <Unicode> <code points> preserve these assignments, and <UTF-8> represents them by the same single-byte values. This compatibility does not make arbitrary eight-bit text <ASCII>: values 128–255 belong to some other encoding or <byte> protocol. Nor does the code assign a particular <glyph>[glyph shape] or <font>. Separating a character code from its rendering makes text transport and typography distinct operations.
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