[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki8\/cdc-display-code-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki8\/cdc-display-code-wikipedia\/","headline":"CDC display code – Wikipedia","name":"CDC display code – Wikipedia","description":"before-content-x4 From Wikipedia, the free encyclopedia after-content-x4 Display code is the six-bit character code used by many computer systems manufactured","datePublished":"2019-07-11","dateModified":"2019-07-11","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki8\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki8\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","url":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","height":"1","width":"1"},"url":"https:\/\/wiki.edu.vn\/en\/wiki8\/cdc-display-code-wikipedia\/","wordCount":5831,"articleBody":" (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4From Wikipedia, the free encyclopedia (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Display code is the six-bit character code used by many computer systems manufactured by Control Data Corporation, notably the CDC3000 series and the following CDC 6000 series in 1964. The CDC 6000 series and their successors had 60 bit words. As such, typical usage packed 10 characters per word. It is a six-bit extension of the four-bit BCD encoding, and was referred to as BCDIC[citation needed] (BCD interchange code.)There were several variations of display code, notably the 63-character character set, and the 64-character character set. There were also ‘CDC graphic’ and ‘ASCII graphic’ variants of both the 63- and 64-character sets. The choice between 63- or 64-character character set, and between CDC or ASCII graphic was site-selectable. Generally, early CDC customers started out with the 63-character character set, and CDC graphic print trains on their line printers. As time-sharing became prevalent, almost all sites used the ASCII variant – so that line printer output would match interactive usage. Later CDC customers were also more likely to use the 64-character character set. (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4A later variation, called 6\/12 display code, was used in the Kronos and NOS timesharing systems in order to support full ASCII capabilities. In 6\/12 mode, an escape character (the circumflex, octal 76) would indicate that the following letter was lower case. Thus, upper case and other characters were 6 bits in length, and lower case characters were 12 bits in length.The PLATO system used a further variant of 6\/12 display code. Noting that lower case letters were most common in typical PLATO usage, the roles were reversed. Lower case letters were the norm, and the escape character preceded upper case letters.The typical text file format used a zero-byte terminator to signify the end of each record. The zero-byte terminator was indicated by, at least, the final twelve bits of a 60-bit word being set to zero.[1] The terminator could actually be anywhere from 12- to 66-bits long – depending on the length of the record. This caused an ambiguity in the 64-character character set, when a colon character needed to be the final character in a record. In such cases a blank character was typically appended to the record after the trailing colon. (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Table of ContentsDisplay code characters (64-character character set version)[edit]6\/12 display code[edit]Further reading[edit]External links[edit]Display code characters (64-character character set version)[edit]ASCIICDCBinaryDecimalOctalGraphicGraphicName000 000000::colon[2]000 001101AA000 010202BB000 011303CC000 100404DD000 101505EE000 110606FF000 111707GG001 000810HH001 001911II001 0101012JJ001 0111113KK001 1001214LL001 1011315MM001 1101416NN001 1111517OO010 0001620PP010 0011721QQ010 0101822RR010 0111923SS010 1002024TT010 1012125UU010 1102226VV010 1112327WW011 0002430XX011 0012531YY011 0102632ZZ011 011273300011 100283411011 101293522011 110303633011 111313744ASCIICDCBinaryDecimalOctalGraphicGraphicName100 000324055100 001334166100 010344277100 011354388100 100364499100 1013745++100 1103846––100 1113947**101 0004050\/\/101 0014151((101 0104252))101 0114353$$101 1004454==101 1014555\u00a0\u00a0blank101 1104656,,101 1114757..110 0004860#\u2261equiv110 0014961[[110 0105062]]110 0115163%%[3]110 1005264“\u2260not eq110 1015365_\u2192concat[4]110 1105466!\u2228log OR110 1115567&\u2227log AND111 0005670‘\u2191super111 0015771?\u2193sub[5]111 0105872111 1006074@\u2264111 1016175\u2265111 1106276^\u00acNOT111 1116377;;^ CDC often used the term byte to refer to 12-bit quantities, even though characters were only 6-bits long.^ Display code 00 has no associated graphic in the 63-character set^ Display code 63 (octal) is a\u00a0: (colon) in the 63-character set^ In CDC PASCAL, this is the left brace, {, character^ In CDC PASCAL, this is the right brace, }, character6\/12 display code[edit]The NOS 6\/12 display code is one of the character sets used on CDC Cyber NOS computers to represent all ASCII characters.ASCIIdisplay codeDecHexAbbrDecOct6\/12000NUL62 3276 40^5101SOH62 3376 41^6202STX62 3476 42^7303ETX62 3576 43^8404EOT62 3676 44^9505ENQ62 3776 45^+606ACK62 3876 46^-707BEL62 3976 47^*808BS62 4076 50^\/909HT62 4176 51^(100ALF62 4276 52^)110BVT62 4376 53^$120CFF62 4476 54^=130DCR62 4576 55^\u00a0140ESO62 4676 56^,150FSI62 4776 57^.1610DLE62 4876 60^#1711DC162 4976 61^[1812DC262 5076 62^]1913DC362 5176 63^%2014DC462 5276 64^”2115NAK62 5376 65^_2216SYN62 5476 66^!2317ETB62 5576 67^&2418CAN62 5676 70^’2519EM62 5776 71^?261ASUB62 5876 72^<271BESC62 5976 73^>281CFS62 6076 74^@291DGS62 6176 75^301ERS62 6276 76^^311FUS62 6376 77^;ASCIIdisplay codeDecHexGlyphDecOct6\/12322045553321!5466!3422“5264”3523#4860#3624$4353$3725%5163%3826&5567&3927‘5670‘4028(4151(4129)4252)422A*3947*432B+3745+442C,4656,452D–3846–462E.4757.472F\/4050\/4830027330493112834150322293525133330363523443137453355324055436633416553773442756388354385739936449583A:60 474 04@D593B;6377;603C5973>633F?5771?ASCIIdisplay codeDecHexGlyphDecOct6\/126440@60 174 01@A6541A101A6642B202B6743C303C6844D404D6945E505E7046F606F7147G707G7248H810H7349I911I744AJ1012J754BK1113K764CL1214L774DM1315M784EN1416N794FO1517O8050P1620P8151Q1721Q8252R1822R8353S1923S8454T2024T8555U2125U8656V2226V8757W2327W8858X2430X8959Y2531Y905AZ2632Z915B[4961[925C6175935D]5062]945E^60 274 02@B955F_5365_ASCIIdisplay codeDecHexGlyphDecOct6\/129660‘60 774 07@G9761a62 176 01^A9862b62 276 02^B9963c62 376 03^C10064d62 476 04^D10165e62 576 05^E10266f62 676 06^F10367g62 776 07^G10468h62 876 10^H10569i62 976 11^I1066Aj62 1076 12^J1076Bk62 1176 13^K1086Cl62 1276 14^L1096Dm62 1376 15^M1106En62 1476 16^N1116Fo62 1576 17^O11270p62 1676 20^P11371q62 1776 21^Q11472r62 1876 22^R11573s62 1976 23^S11674t62 2076 24^T11775u62 2176 25^U11876v62 2276 26^V11977w62 2376 27^W12078x62 2476 30^X12179y62 2576 31^Y1227Az62 2676 32^Z1237B{62 2776 33^01247C|62 2876 34^11257D}62 2976 35^21267E~62 3076 36^31277FDEL62 3176 37^4Further reading[edit]Savard, John J. G. (2018) [2005]. “Computer Arithmetic”. quadibloc. The Early Days of Hexadecimal. Archived from the original on 2018-07-16. Retrieved 2018-07-16.External links[edit] (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4"},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki8\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki8\/cdc-display-code-wikipedia\/#breadcrumbitem","name":"CDC display code – Wikipedia"}}]}]