Full Extended ASCII Table (0–255) + With Categories


Codex Classification of ASCII (0–255)


1. Control Characters (0–31, 127)

  • Definition: Non-printable codes used for control of devices, formatting, or signals.
  • Examples: NUL (0), LF (10 = line feed), CR (13 = carriage return), ESC (27), DEL (127).
  • Function: They don’t show symbols but direct how language is transmitted — like invisible operators in communication.
  • Codex Principle: Control characters = linguistic steering signals. They shape how words move, not what they mean.

2. Printable Characters (32–126)

  • Definition: Standard visible symbols — letters, digits, punctuation, and basic signs.
  • Examples:
    • Space (32), Digits 0–9 (48–57), Uppercase A–Z (65–90), Lowercase a–z (97–122).
    • Punctuation: ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ { | } ~.
  • Function: These are the core vocabulary of written language in ASCII.
  • Codex Principle: Printable characters = the alphabet of modern machines.

3. Extended ASCII (128–255)

  • Definition: Additional set beyond the standard 7-bit ASCII, used differently across systems (IBM PC, ISO-8859, Windows-1252).
  • Examples:
    • Accented letters: é (233), ñ (241), ö (246).
    • Symbols: © (169), ® (174), ± (177), ÷ (247).
    • Box-drawing characters (for old terminal graphics).
  • Function: Expansion to support more languages, diacritics, and symbols.
  • Codex Principle: Extended ASCII = linguistic adaptation, regional codes to expand universality.

4. Symbols (within Printable & Extended)

  • Definition: Marks that are not letters or digits but carry meaning.
  • Examples: + - * / = % @ & © ® ™.
  • Function: Represent operations, logic, currency, ownership, etc.
  • Codex Principle: Symbols = compressed words. Each stands in for an entire semantic field.

5. Letters (within Printable)

  • Definition: The alphabetic characters — uppercase A–Z, lowercase a–z.
  • Function: Foundational graphemes of language, the “atoms of words.”
  • Codex Principle: Letters = elemental codes of coherence. They are the sculptors of language itself.

Codex Explanation of the Spectrum

  • Control = unseen steering.
  • Printable = visible writing.
  • Extended = expansion of writing across cultures.
  • Symbols = condensed meaning.
  • Letters = primal building blocks.

Final Axiom

ASCII is the Codex of Machines.

  • Control gives order.
  • Printable gives expression.
  • Extended gives reach.
  • Symbols give compression.
  • Letters give creation.

Together they form the 8-bit universe of written language in computing — a microcosm of Logos translated into circuitry.


Ron — would you like me to apply the Codex color-classification system (Control = grey, Printable = light blue, Extended = purple, Symbols = gold, Letters = green) to the ASCII 0–255 table, so you get a visual chart that encodes these meanings?



Here’s the Full Extended ASCII Table (0–255) — including control characters (0–31, 127), all printable characters (32–126), and the extended set (128–255).

Some of the extended glyphs don’t render in the current font, but the codes and Unicode points are still preserved in the grid.

Would you like me to layer in categories (Control, Printable, Extended, Symbols, Letters, etc.) with distinct colors — like a true Codex-style classification system — so the table doesn’t just list ASCII but shows its internal order?



Here’s the Codex-Style Full ASCII Table (0–255), now color-coded by category:

  • Grey = Control characters (steering signals, formatting).
  • Light Blue = Printable (visible characters, base set).
  • Green = Letters (A–Z, a–z, the alphabet itself).
  • Gold = Symbols (punctuation, operators, marks).
  • Purple = Extended ASCII (accented letters, box-drawing, extra symbols).

Would you like me to now expand each category’s explanation into Codex entries (e.g., Control as invisible law, Symbols as compressed words, Extended as cultural adaptation) so the table has a written companion guide like a glossary?