| 上位Nibble ＼ 下位Nibble | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 0 | NULL (null文字) | DLE (データリンクエスケープ) | SP (スペース) | 0 | @ | P | ` | p |
| 1 | SOH (ヘッダ開始) | DC1 (装置制御1) | ! | 1 | A | Q | a | q |
| 2 | STX (テキスト開始) | DC2 (装置制御2) | " | 2 | B | R | b | r |
| 3 | ETX (テキスト終了) | DC3 (装置制御3) | # | 3 | C | S | c | s |
| 4 | EOT (転送終了) | DC4 (装置制御4) | $ | 4 | D | T | d | t |
| 5 | ENQ (照会) | NAK (受信失敗) | % | 5 | E | U | e | u |
| 6 | ACK (受信成功) | SYN (同期) | & | 6 | F | V | f | v |
| 7 | BEL (警告) | ETB (転送ブロック終了) | ' | 7 | G | W | g | w |
| 8 | BS (後退) | CAN (取消) | ( | 8 | H | X | h | x |
| 9 | HT (水平タブ) | EM (メディア終了) | ) | 9 | I | Y | i | y |
| A | LF (改行) | SUB (置換) | * | : | J | Z | j | z |
| B | VT (垂直タブ) | ESC (エスケープ) | + | ; | K | [ | k | { |
| C | FF (改頁) | FS (フォーム区切り) | , | < | L | \ | l | | |
| D | CR (復帰) | GS (グループ区切り) | - | = | M | ] | m | } |
| E | SO (シフトアウト) | RS (レコード区切り) | . | > | N | ^ | n | ～ |
| F | SI (シフトイン) | US (ユニット区切り) | / | ? | O | _ | o | DEL (削除) |
| 上位Nibble ＼ 下位Nibble | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F |
| 0 | NULL | DLE | SP | 0 | @ | P | ` | p | ｰ | ﾀ | ﾐ | |||||
| 1 | SOH | DC1 | ! | 1 | A | Q | a | q | ｡ | ｱ | ﾁ | ﾑ | ||||
| 2 | STX | DC2 | " | 2 | B | R | b | r | ｢ | ｲ | ﾂ | ﾒ | ||||
| 3 | ETX | DC3 | # | 3 | C | S | c | s | ｣ | ｳ | ﾃ | ﾓ | ||||
| 4 | EOT | DC4 | $ | 4 | D | T | d | t | ､ | ｴ | ﾄ | ﾔ | ||||
| 5 | ENQ | NAK | % | 5 | E | U | e | u | ･ | ｵ | ﾅ | ﾕ | ||||
| 6 | ACK | SYN | & | 6 | F | V | f | v | ｦ | ｶ | ﾆ | ﾖ | ||||
| 7 | BEL | ETB | ' | 7 | G | W | g | w | ｧ | ｷ | ﾇ | ﾗ | ||||
| 8 | BS | CAN | ( | 8 | H | X | h | x | ｨ | ｸ | ﾈ | ﾘ | ||||
| 9 | HT | EM | ) | 9 | I | Y | i | y | ｩ | ｹ | ﾉ | ﾙ | ||||
| A | LF | SUM | * | : | J | Z | j | z | ｪ | ｺ | ﾊ | ﾚ | ||||
| B | VT | ESC | + | ; | K | [ | k | { | ｫ | ｻ | ﾋ | ﾛ | ||||
| C | FF | FS | , | < | L | \ | l | | | ｬ | ｼ | ﾌ | ﾜ | ||||
| D | CR | GS | - | = | M | ] | m | } | ｭ | ｽ | ﾍ | ﾝ | ||||
| E | SO | RS | . | > | N | ^ | n | ～ | ｮ | ｾ | ﾎ | ﾞ | ||||
| F | SI | US | / | ? | O | _ | o | DEL | ｯ | ｿ | ﾏ | ﾟ |