ISO 2047

Early symbols assigned to the 32 control characters, space and delete characters. (ISO 2047, MIL-STD-188-100, 1972)

ISO 2047 (Information processing – Graphical representations for the control characters of the 7-bit coded character set) is a standard for graphical representation of the control characters for debugging purposes, such as may be found in the character generator of a computer terminal; it also establishes a two-letter abbreviation of each control character. The graphics and two-letter codes are essentially unchanged from the 1968 European standard ECMA-17 and the 1973 American standard ANSI X3.32-1973. It became an ISO standard in 1975. It is also standardized as GB/T 3911-1983 in China, as KS X 1010 in Korea (formerly KS C 5713), and was enacted in Japan as "graphical representation of information exchange capabilities for character" JIS X 0209:1976 (former JIS C 6227) (abolished January 20, 2010).

While the ISO/IEC 646 three-letter abbreviations (such as "ESC"), or caret notation (such as "^[") are still in use, the graphical symbols of ISO 2047 are considered outdated and rare.

Character table

Code
(hex)
Common
abbreviation
Name Symbol 2-letter
abbreviation
00 NUL Null U+2395 NU
01 TC1, SOH Start of Heading U+2308 SH
02 TC2, STX Start of Text U+22A5 SX
03 TC3, ETX End of Text U+230B EX
04 TC4, EOT End of Transmission U+2301 ET
05 TC5, ENQ Enquiry U+22A0 EQ
06 TC6, ACK Acknowledge U+2713 AK
07 BEL Bell U+237E BL
08 FE0, BS Backspace BS
09 FE1, HT Horizontal Tabulation U+2AAB HT
0A FE2, LF Line Feed U+2261 LF
0B FE3, VT Vertical Tabulation U+2A5B VT
0C FE4, FF Form Feed U+21A1 FF
0D FE5, CR Carriage Return U+2AAA CR
0E SO Shift Out U+2297 SO
0F SI Shift In U+2299 SI
10 TC7, DLE Data Link Escape U+229F DL
11 DC1, XON, CON Device Control 1 U+25F7 D1
12 DC2, RPT, TAPE Device Control 2 U+25F6 D2
13 DC3, XOF, XOFF Device Control 3 U+25F5 D3
14 DC4, COF, KMC, TAPE Device Control 4 U+25F4 D4
15 TC8, NAK Negative Acknowledge U+237B NK
16 TC9, SYN Synchronization U+238D SY
17 TC10, ETB End of Transmission Block U+22A3 EB
18 CAN Cancel U+29D6 CN
19 EM End of Medium U+237F EM
1A SUB Substitute Character U+2426 SB
1B ESC Escape U+2296 EC
1C IS4, FS File Separator U+25F0 FS
1D IS3, GS Group Separator U+25F1 GS
1E IS2, RS Record Separator U+25F2 RS
1F IS1 US Unit Separator U+25F3 US
20 SP Space U+25B3 SP
7F DEL Delete DT

This page was last updated at 2024-02-07 17:22 UTC. Update now. View original page.

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