The TerSCII character set is designed to serve in the world of ternary information processing systems.
With 26 letters in the English alphabet and comparable numbers in other western and middle-eastern alphabets, the first power of 3 that lends itself to representing a reasonable character set is 34 or 81. A 4-trit character allows encoding the Roman alphabet in both upper and lower case, plus 10 digits and a modest (but insufficient) set of control characters and punctuation marks. In this environment, a code extension system comparable to that of Unicode invites a character code built on 81-character blocks.
| Basic Roman Block | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 00 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 0 | ES | SP | 0 | 9 | I | R | _ | i | r |
| 1 | EL | - | 1 | A | J | S | a | j | s |
| 2 | ET | ' | 2 | B | K | T | b | k | t |
| 3 | LR | , | 3 | C | L | U | c | l | u |
| 4 | OP | ; | 4 | D | M | V | d | m | v |
| 5 | RL | : | 5 | E | N | W | e | n | w |
| 6 | SU | . | 6 | F | O | X | f | o | x |
| 7 | HT | ! | 7 | G | P | Y | g | p | y |
| 8 | SD | ? | 8 | H | Q | Z | h | q | z |
| Code | Meaning |
|---|---|
| ES | End of String, analogous to NULL |
| EL | End of Line, analogous to LF or CR/LF |
| ET | End of Text file |
| LR | Left to Right rendering of following text |
| OP | OverPrint following text on previous char |
| RL | Right to Left rendering of following text |
| SU | Shift Up (superscript) following by 1/3 baseline |
| HT | Horizontal Tab in current rendering direction |
| SD | Shift Down (subscript) following by 1/3 baseline |
| SP | Space |
| 01 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| 0 | ‘ | ||||||||
| 1 | * | ||||||||
| 2 | ’ | ||||||||
| 3 | / | ||||||||
| 4 | | | ||||||||
| 5 | \ | ||||||||
| 6 | ‹ | ||||||||
| 7 | ◊ | ||||||||
| 8 | › |
incoming heptavintimal