This article may be too technical for most readers to understand. (October 2018) |
Stanford/ITS character set is an extended ASCII character set based on SEASCII with modifications allowing compatibility with 1968 ASCII.[2]
 Stanford/ITS character set code page layout | |
| Language(s) | English |
|---|---|
| Created by | MIT[1] |
| Definitions | RFC 734 |
| Classification | Extended ASCII |
| Extends | US-ASCII |
| Based on | SEASCII[2] |
Usage
editIt is used as an alternate character set of the SUPDUP protocol for terminals with %TOSAI and %TOFCI bits set.[2] It is also recommended for TeX implementations on systems with large character sets.[1] The default plain TeX macro package sets values B16 (↑) and 116 (↓) as alternative character codes for superscripts and subscripts, respectively (the default being ^ and _).[3]
The Knight keyboard is an example of a keyboard capable of inputting all of the defined characters excluding ⋅γδ±⊕◊∫, as they are mapped to ASCII commands NUL, HT, LF, FF, CR, ESC and DEL, respectively.
Coverage
editEach character is encoded as a single seven-bit code value. It contains all 95 printable ASCII characters along with 27 mathematical symbols and 6 Greek letters.
Code page layout
edit| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | |
| 0x | ⋅ | ↓ | α | β | ∧ | ¬ | ∈ | π | λ | γ | δ | ↑ | ± | ⊕ | ∞ | ∂ |
| 1x | ⊂ | ⊃ | ∩ | ∪ | ∀ | ∃ | ⊗ | ⇆ | ← | → | ≠ | ◊ | ≤ | ≥ | ≡ | ∨ |
| 2x | SP | ! | " | # | $ | % | & | ' | ( | ) | * | + | , | - | . | / |
| 3x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | : | ; | < | = | > | ? |
| 4x | @ | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O |
| 5x | P | Q | R | S | T | U | V | W | X | Y | Z | [ | \ | ] | ^ | _ |
| 6x | ` | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o |
| 7x | p | q | r | s | t | u | v | w | x | y | z | { | | | } | ~ | ∫ |
See also
editReferences
edit- ^ a b Knuth, Donald (1986). "Appendix C: Character Codes". The TeXbook (PDF). Reading, Massachusetts: Addison-Wesley. p. 369. ISBN 0201134470.
- ^ a b c Crispin, Mark (October 1977). "Stanford/ITS character set". SUPDUP Protocol. IETF. p. 12. doi:10.17487/RFC0734. RFC 734. Retrieved February 18, 2019.
- ^ Knuth, Donald (1986). "Appendix B: Basic Control Sequences". The TeXbook (PDF). Reading, Massachusetts: Addison-Wesley. p. 343. ISBN 0201134470.