Knowledge (XXG)

DEC RADIX 50

Source đź“ť

814:(the delimiter) can be any printable character except for = and : . The delimiters enclose the characters to be converted which may be A through Z, 0 through 9, dollar ($ ), dot (.) and space ( ). If there are fewer than 3 characters they are considered to be left justified and trailing spaces are assumed. The packing algorithm is as follows: A. Each character is translated into its RADIX 50 equivalent as indicated in the following table: Character - RADIX 50 Equivalent (octal): (space) - 0, A–Z - 1–32, $ - 33, . - 34, 0–9 - 36–47. Note that another character could be defined for code 35. B. The RADIX 50 equivalents for characters 1 through 3 (C1,C2,C3) are combined as follows: RESULT=((C1*50)+C2)*50+C3 1123: 1968: 4027: 1978: 1988: 813:
systems programs often handle symbols in a specially coded form called RADIX 50 (this form is sometimes referred to as MOD40). This form allows 3 characters to be packed into 16 bits; therefore, any 6-character symbol can be held in two words. The single operand is of the form /CCC/ where the slash
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PDP-11 operating systems. Using RADIX 50 encoding, six characters of a filename could be stored in two 16-bit words, while three more extension (file type) characters could be stored in a third 16-bit word. Similary, a three-character device name such as "DL1" could also be stored in a 16-bit
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There were several minor variations of this encoding with differing interpretations of the 27, 28, 29 code points. Where RADIX 50 was used for filenames stored on media, the code points represent the
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For example, using the PDP-11 encoding, the string "ABCDEF", with character values 1, 2, 3, 4, 5, and 6, would be encoded as a word containing the value 1Ă—40 + 2Ă—40 + 3Ă—40 =
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word. The period that separated the filename and its extension, and the colon separating a device name from a filename, was implied (i.e., was not stored and always assumed to be present).
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format) was used in Digital's 18-bit PDP-9 and PDP-15 computers to store symbols in symbol tables, leaving two extra bits per 18-bit word ("symbol classification bits").
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for assemblers or compilers which supported six-character symbol names from a 40-character alphabet. This left four bits to encode properties of the symbol.
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characters, and will be shown as such when listing the directory with utilities such as DIR. When encoding strings in the PDP-11 assembler and other PDP-11
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In RADIX 50, strings were encoded in successive words as needed, with the first character within each word located in the most significant position.
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RADIX 50 was not normally used in 36-bit systems for encoding ordinary character strings; file names were normally encoded as six
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characters, and are encoded as such with the default RAD50 macro in the global macros file, and this encoding was used in the
386:("999"). When there were fewer than three characters in a word, the last word for the string was padded with trailing spaces. 3565: 2158: 2052: 1513: 817: 792: 945: 794:
PAL-11R Assembler - Programmer's Manual - Program Assembly Language and Relocatable Assembler for the Disk Operating System
139:, however, IBM SQUOZE packed six characters of a 50-character alphabet plus two additional flag bits into one 36-bit word. 3679: 3650: 3300: 1783: 1079: 972: 798: 750: 704: 430: 43: 3742: 3630: 3590: 2010: 1873: 1580: 1131: 70: 4049: 3984: 3595: 3511: 3496: 3400: 3313: 3285: 3251: 1931: 1878: 1661: 1623: 1468: 867: 3261: 3256: 361:
Some strings in DEC's 16-bit systems were encoded as 8-bit bytes, while others used RADIX 50 (then also called
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characters, and full ASCII strings as five seven-bit characters and one unused bit per 36-bit word.
3918: 3545: 3030: 2915: 2905: 2900: 1748: 1493: 1147: 941: 836: 871: 3999: 3847: 3660: 3655: 3580: 2579: 2553: 2077: 2033: 1615: 1043: 39: 3989: 3928: 3908: 3570: 3550: 3530: 3158: 2634: 2614: 2126: 1725: 1308: 899: 3946: 3520: 3486: 3196: 3025: 1763: 1448: 895: 98: 86: 66: 3994: 3913: 2644: 2639: 2629: 2574: 2259: 2249: 2244: 2239: 2234: 2229: 2224: 1671: 1099: 640: 375:, followed by a second word containing the value 4Ă—40 + 5Ă—40 + 6Ă—40 = 900:"Lecture 7, Object Codes, Loaders and Linkers - Final steps on the road to machine code" 3446: 3441: 3431: 3426: 3421: 3416: 3380: 3375: 3368: 3363: 3358: 3353: 3348: 3343: 3338: 3333: 3328: 3323: 3191: 3148: 3143: 3138: 3133: 3128: 3123: 3118: 3113: 3108: 3103: 3098: 3093: 3088: 3083: 3078: 2985: 2980: 2975: 2970: 2965: 2960: 2955: 2950: 2945: 2940: 2935: 2930: 2714: 2694: 2299: 2219: 2214: 2209: 2204: 2199: 2194: 2189: 2184: 2179: 2047: 1768: 1635: 1629: 1189: 656: 4043: 3766: 3186: 3073: 3068: 3063: 3058: 3053: 3048: 2925: 2920: 2910: 2895: 2890: 2885: 2880: 2875: 2870: 2865: 2860: 2855: 2850: 2845: 2840: 2835: 2830: 2825: 2820: 2815: 2810: 2805: 2800: 2795: 2790: 2785: 2780: 2775: 2770: 2765: 2760: 2755: 2750: 2745: 2740: 2735: 2730: 2649: 2624: 2589: 2548: 2294: 1813: 1014: 906:. Part of the CS:3620 Operating Systems Collection. Department of Computer Science, 3786: 3781: 3776: 3771: 3246: 3241: 3236: 3231: 3226: 3221: 3216: 3211: 3206: 3201: 2684: 2679: 2659: 2543: 2535: 2168: 1808: 1704: 1550: 419: 117: 82: 47: 933: 429:
The use of RADIX 50 was the source of the filename size conventions used by
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PDP-9 Utility Programs--Advanced Software System--Programmer's Reference Manual
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for representing object code symbols, DEC's variant was also sometimes called
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The actual encoding differs between the 36-bit and 16-bit systems.
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operating system considered the code point 29 to be undefined.
65:) can encode six characters plus four additional bits into one 3757: 1176: 1044:
https://github.com/turbo/ptt-its/blob/master/doc/info/midas.25
797:(2nd revised printing ed.). Maynard, Massachusetts, USA: 128: 55: 116:
In 36-bit DEC systems RADIX 50 was commonly used in
855: 853: 860:"Appendix B.3: Radix-50 Constants and Character Set". 85:), three characters plus two additional bits into one 707:(DEC). 1965. p. 57. DEC-6-0-EX-SYS-UM-IP-PRE00. 3972: 3927: 3795: 3756: 3674: 3409: 3299: 3275: 3157: 3039: 2723: 2562: 2534: 2368: 2310: 2167: 2040: 1827: 1723: 1670: 1614: 1559: 1447: 1307: 1282: 1227: 1175: 1146: 1130: 1086: 415: 411: 407: 399: 395: 391: 786: 784: 782: 780: 778: 776: 774: 3959:Unicode control, format and separator characters 735: 733: 731: 729: 689: 687: 61:RADIX 50's 40-character repertoire (050 in 2018: 1064: 8: 890: 888: 826: 824: 971:(1 ed.). Maynard, Massachusetts, USA: 863:Compaq Fortran 77 Language Reference Manual 2025: 2011: 2003: 1143: 1121: 1071: 1057: 1049: 436: 151:PDP-6, PDP-10/DECsystem-10, DECSYSTEM-20 148: 801:. May 1971 . p. 8-8. DEC-11-ASDB-D 683: 7: 1987: 1680:Digital Storage Systems Interconnect 697:PDP-6 Multiprogramming System Manual 1754:Dynamically Redefined Character Set 422:. Some early documentation for the 3369:Norwegian and Danish (alternative) 1700:Synchronous Backplane Interconnect 833:"RADIX50 Character Code Reference" 14: 753:. 1968. Order No. DEC-9A-GUAB-D. 4026: 4025: 1986: 1977: 1976: 1967: 1966: 125:SQUOZE character encoding scheme 97:), or three characters into one 3813:Digital encoding of APL symbols 3748:Comparison of Unicode encodings 2266:Proposed but not approved 1894:Maintenance Operations Protocol 1025:from the original on 2020-06-06 948:from the original on 2020-06-19 914:from the original on 2020-06-06 760:from the original on 2020-06-04 749:. Maynard, Massachusetts, USA: 714:from the original on 2014-07-14 703:. Maynard, Massachusetts, USA: 944:. DEC Squoze Character Table. 904:Operating Systems, Spring 2018 406:the code points represent the 1: 4060:Digital Equipment Corporation 1784:Mass Storage Control Protocol 1080:Digital Equipment Corporation 973:Digital Equipment Corporation 968:PDP-11 Getting DOS on the Air 799:Digital Equipment Corporation 751:Digital Equipment Corporation 705:Digital Equipment Corporation 431:Digital Equipment Corporation 44:Digital Equipment Corporation 1874:Digital Federal Credit Union 1096:(founder and CEO, 1957–1992) 975:. August 1971. DEC-11-SYDC-D 932:Murrell, Stephen J. (2005). 123:For its similarities to the 3985:Character encodings in HTML 3319:National Replacement (NRCS) 3286:Japanese language in EBCDIC 1918:Sequence and Batch Language 1879:Dynamic debugging technique 1013:Williams, Al (2016-11-22). 868:Compaq Computer Corporation 346:RADIX 50 (also called 4076: 1909:Record Management Services 1695:Standard Disk Interconnect 4023: 1962: 1943:The Ultimate Entrepreneur 1119: 934:"DEC/PDP Character Codes" 831:Durda IV., Frank (2004). 477: 474: 471: 468: 465: 462: 459: 456: 451: 444: 189: 186: 183: 180: 177: 174: 171: 168: 163: 156: 4015:Variable-length encoding 3796:Miscellaneous code pages 2554:Extended Unix Code / EUC 2245:-15 (New Western Europe) 2041:Early telecommunications 1606:DIGITAL Command Language 38:), is an uppercase-only 3942:C0 and C1 control codes 1932:Systems Research Center 1927:System Reference Manual 452:Least significant bits 164:Least significant bits 46:(DEC) for use on their 2190:-3 (Maltese/Esperanto) 2141:World System Teletext 1899:On-line Debugging Tool 908:The University of Iowa 870:. 1999. Archived from 667:Six-bit character code 651:Densely packed decimal 133:SHARE Operating System 3964:Whitespace characters 3641:Ventura International 404:programming languages 26:(also referred to as 3359:Norwegian and Danish 1889:Local Area Transport 1647:National Replacement 938:rabbit.eng.miami.edu 3919:Unified Hangul Code 3591:PostScript Standard 3314:Multinational (MCS) 2185:-2 (Central Europe) 2180:-1 (Western Europe) 2034:Character encodings 1749:Digital Linear Tape 1108:(VP of engineering) 996:"RT11 Radix50 Demo" 942:University of Miami 441: 153: 4050:Character encoding 4000:Hardware code page 3760:typesetting system 3596:PostScript Latin 1 3252:Cyrillic + Finnish 3159:Windows code pages 3041:IBM AIX code pages 2369:National standards 2300:Ukrainian Cyrillic 1972:Computers template 1015:"Squoze your data" 437: 149: 40:character encoding 16:Character encoding 4037: 4036: 3990:Charset detection 3929:Control character 3611:Sharp calculators 3482:Casio calculators 3410:Platform specific 3262:Cyrillic + German 3257:Cyrillic + French 2675:Maltese/Esperanto 2311:Bibliographic use 2195:-4 (North Europe) 2127:T.51/ISO/IEC 6937 2085:Baudot and Murray 2000: 1999: 1303: 1302: 896:Jones, Douglas W. 627: 626: 339: 338: 4067: 4029: 4028: 3521:DG International 3396:Special Graphics 3197:Extended Latin-8 2595:Central European 2585:Barents Cyrillic 2290:Barents Cyrillic 2260:-12 (Devanagari) 2256:Abandoned parts 2027: 2020: 2013: 2004: 1990: 1989: 1980: 1979: 1970: 1969: 1764:Flip-Chip module 1657:Special Graphics 1144: 1125: 1114:(CEO, 1992–1998) 1073: 1066: 1059: 1050: 1033: 1031: 1030: 1000: 999: 992: 986: 983: 981: 980: 963: 957: 956: 954: 953: 929: 923: 922: 920: 919: 892: 883: 882: 880: 879: 857: 848: 847: 845: 844: 835:. Archived from 828: 819: 816: 807: 806: 788: 769: 768: 766: 765: 759: 748: 737: 724: 722: 720: 719: 713: 702: 691: 646:Chen–Ho encoding 442: 417: 413: 409: 401: 397: 393: 385: 384: 378: 374: 154: 4075: 4074: 4070: 4069: 4068: 4066: 4065: 4064: 4040: 4039: 4038: 4033: 4019: 3995:Han unification 3968: 3923: 3791: 3752: 3670: 3492:Compucolor 8001 3405: 3401:Technical (TCS) 3324:French Canadian 3295: 3271: 3267:Polytonic Greek 3153: 3035: 2719: 2705:Turkic Cyrillic 2620:Font X (Kermit) 2615:Farsi (Persian) 2567: 2558: 2530: 2364: 2306: 2176:Approved parts 2163: 2036: 2031: 2001: 1996: 1958: 1823: 1719: 1666: 1626:(Multinational) 1610: 1562: 1555: 1450: 1443: 1310: 1299: 1278: 1223: 1171: 1137: 1133: 1132:Instruction set 1126: 1117: 1100:Harlan Anderson 1082: 1077: 1040: 1028: 1026: 1012: 1009: 1007:Further reading 1004: 1003: 994: 993: 989: 978: 976: 965: 964: 960: 951: 949: 931: 930: 926: 917: 915: 894: 893: 886: 877: 875: 859: 858: 851: 842: 840: 830: 829: 822: 808:. p. 8-8: 804: 802: 791:"8.10 .RAD50". 790: 789: 772: 763: 761: 757: 746: 739: 738: 727: 723:(1+84+10 pages) 717: 715: 711: 700: 693: 692: 685: 680: 641:Base conversion 632: 448: 446: 382: 380: 376: 372: 359: 351: 344: 160: 158: 114: 81:/DECsystem-10, 17: 12: 11: 5: 4073: 4071: 4063: 4062: 4057: 4055:Character sets 4052: 4042: 4041: 4035: 4034: 4031:Character sets 4024: 4021: 4020: 4018: 4017: 4012: 4007: 4002: 3997: 3992: 3987: 3982: 3976: 3974: 3973:Related topics 3970: 3969: 3967: 3966: 3961: 3956: 3955: 3954: 3949: 3939: 3937:Morse prosigns 3933: 3931: 3925: 3924: 3922: 3921: 3916: 3911: 3906: 3901: 3896: 3889: 3888: 3887: 3882: 3877: 3867: 3862: 3857: 3856: 3855: 3850: 3842: 3837: 3832: 3827: 3822: 3821: 3820: 3810: 3805: 3799: 3797: 3793: 3792: 3790: 3789: 3784: 3779: 3774: 3769: 3763: 3761: 3754: 3753: 3751: 3750: 3745: 3740: 3735: 3730: 3725: 3720: 3715: 3710: 3705: 3700: 3695: 3690: 3684: 3682: 3672: 3671: 3669: 3668: 3663: 3658: 3653: 3648: 3643: 3638: 3633: 3631:TI calculators 3628: 3623: 3618: 3613: 3608: 3603: 3598: 3593: 3588: 3583: 3578: 3573: 3568: 3563: 3558: 3553: 3548: 3543: 3538: 3533: 3528: 3523: 3518: 3509: 3504: 3499: 3494: 3489: 3484: 3479: 3474: 3469: 3464: 3459: 3454: 3449: 3444: 3439: 3434: 3429: 3424: 3419: 3413: 3411: 3407: 3406: 3404: 3403: 3398: 3393: 3388: 3383: 3378: 3373: 3372: 3371: 3366: 3361: 3356: 3351: 3346: 3341: 3339:United Kingdom 3336: 3331: 3326: 3316: 3310: 3308: 3297: 3296: 3294: 3293: 3288: 3282: 3280: 3273: 3272: 3270: 3269: 3264: 3259: 3254: 3249: 3244: 3239: 3234: 3229: 3224: 3219: 3214: 3209: 3204: 3199: 3194: 3189: 3184: 3174: 3169: 3163: 3161: 3155: 3154: 3152: 3151: 3146: 3141: 3136: 3131: 3126: 3121: 3116: 3111: 3106: 3101: 3096: 3091: 3086: 3081: 3076: 3071: 3066: 3061: 3056: 3051: 3045: 3043: 3037: 3036: 3034: 3033: 3028: 3023: 3018: 3013: 3008: 3003: 2998: 2993: 2988: 2983: 2978: 2973: 2968: 2963: 2958: 2953: 2948: 2943: 2938: 2933: 2928: 2923: 2918: 2913: 2908: 2903: 2898: 2893: 2888: 2883: 2878: 2873: 2868: 2863: 2858: 2853: 2848: 2843: 2838: 2833: 2828: 2823: 2818: 2813: 2808: 2803: 2798: 2793: 2788: 2783: 2778: 2773: 2768: 2763: 2758: 2753: 2748: 2743: 2738: 2733: 2727: 2725: 2724:DOS code pages 2721: 2720: 2718: 2717: 2712: 2707: 2702: 2697: 2692: 2687: 2682: 2677: 2672: 2670:Latin (Kermit) 2667: 2662: 2657: 2652: 2647: 2642: 2637: 2632: 2627: 2622: 2617: 2612: 2607: 2602: 2597: 2592: 2587: 2582: 2577: 2571: 2569: 2560: 2559: 2557: 2556: 2551: 2546: 2540: 2538: 2532: 2531: 2529: 2528: 2523: 2518: 2513: 2508: 2503: 2498: 2493: 2488: 2483: 2478: 2473: 2468: 2463: 2458: 2453: 2448: 2443: 2438: 2433: 2428: 2423: 2418: 2413: 2408: 2403: 2398: 2393: 2388: 2383: 2378: 2372: 2370: 2366: 2365: 2363: 2362: 2357: 2352: 2347: 2342: 2337: 2332: 2331: 2330: 2325: 2314: 2312: 2308: 2307: 2305: 2304: 2303: 2302: 2297: 2292: 2287: 2279: 2278: 2277: 2272: 2270:KOI-8 Cyrillic 2264: 2263: 2262: 2254: 2253: 2252: 2250:-16 (Romanian) 2247: 2242: 2237: 2232: 2227: 2222: 2217: 2212: 2207: 2202: 2197: 2192: 2187: 2182: 2173: 2171: 2165: 2164: 2162: 2161: 2156: 2155: 2154: 2153: 2152: 2147: 2139: 2134: 2129: 2111: 2106: 2105: 2104: 2094: 2089: 2088: 2087: 2082: 2081: 2080: 2075: 2070: 2065: 2055: 2048:Telegraph code 2044: 2042: 2038: 2037: 2032: 2030: 2029: 2022: 2015: 2007: 1998: 1997: 1995: 1994: 1984: 1974: 1963: 1960: 1959: 1957: 1956: 1951: 1946: 1939: 1934: 1929: 1924: 1919: 1916: 1911: 1906: 1901: 1896: 1891: 1886: 1881: 1876: 1871: 1870: 1869: 1859: 1854: 1847: 1842: 1837: 1831: 1829: 1828:Related topics 1825: 1824: 1822: 1821: 1816: 1811: 1806: 1801: 1796: 1791: 1786: 1781: 1776: 1771: 1766: 1761: 1756: 1751: 1746: 1741: 1736: 1730: 1728: 1721: 1720: 1718: 1717: 1712: 1707: 1702: 1697: 1692: 1687: 1682: 1676: 1674: 1668: 1667: 1665: 1664: 1659: 1654: 1649: 1644: 1639: 1636:Code page 1288 1633: 1630:Code page 1287 1627: 1624:Code page 1100 1620: 1618: 1616:Character sets 1612: 1611: 1609: 1608: 1603: 1598: 1593: 1588: 1583: 1578: 1573: 1567: 1565: 1557: 1556: 1554: 1553: 1548: 1543: 1538: 1533: 1528: 1523: 1518: 1517: 1516: 1506: 1501: 1496: 1491: 1486: 1481: 1476: 1471: 1466: 1461: 1455: 1453: 1445: 1444: 1442: 1441: 1436: 1430: 1424: 1418: 1412: 1407: 1402: 1396: 1391: 1386: 1380: 1375: 1370: 1365: 1360: 1355: 1350: 1344: 1339: 1334: 1328: 1322: 1315: 1313: 1305: 1304: 1301: 1300: 1298: 1297: 1292: 1286: 1284: 1280: 1279: 1277: 1276: 1271: 1266: 1261: 1251: 1250: 1249: 1244: 1233: 1231: 1225: 1224: 1222: 1221: 1216: 1215: 1214: 1204: 1203: 1202: 1192: 1190:MicroVAX 78032 1187: 1181: 1179: 1173: 1172: 1170: 1169: 1164: 1159: 1156: 1152: 1150: 1141: 1128: 1127: 1120: 1118: 1116: 1115: 1109: 1103: 1097: 1090: 1088: 1084: 1083: 1078: 1076: 1075: 1068: 1061: 1053: 1047: 1046: 1039: 1038:External links 1036: 1035: 1034: 1008: 1005: 1002: 1001: 987: 958: 924: 884: 849: 820: 770: 740:"Appendix 1". 725: 682: 681: 679: 676: 675: 674: 669: 664: 659: 657:Hertz encoding 654: 648: 643: 638: 631: 628: 625: 624: 621: 618: 615: 612: 609: 606: 603: 600: 596: 595: 592: 589: 586: 583: 580: 577: 574: 571: 567: 566: 563: 560: 557: 554: 551: 548: 545: 542: 538: 537: 534: 531: 528: 525: 522: 519: 516: 513: 509: 508: 505: 502: 499: 496: 493: 490: 487: 484: 480: 479: 476: 473: 470: 467: 464: 461: 458: 454: 453: 450: 358: 357:16-bit systems 355: 349: 343: 342:18-bit systems 340: 337: 336: 333: 330: 327: 324: 321: 318: 315: 312: 308: 307: 304: 301: 298: 295: 292: 289: 286: 283: 279: 278: 275: 272: 269: 266: 263: 260: 257: 254: 250: 249: 246: 243: 240: 237: 234: 231: 228: 225: 221: 220: 217: 214: 211: 208: 205: 202: 199: 196: 192: 191: 188: 185: 182: 179: 176: 173: 170: 166: 165: 162: 113: 112:36-bit systems 110: 15: 13: 10: 9: 6: 4: 3: 2: 4072: 4061: 4058: 4056: 4053: 4051: 4048: 4047: 4045: 4032: 4022: 4016: 4013: 4011: 4008: 4006: 4003: 4001: 3998: 3996: 3993: 3991: 3988: 3986: 3983: 3981: 3978: 3977: 3975: 3971: 3965: 3962: 3960: 3957: 3953: 3950: 3948: 3945: 3944: 3943: 3940: 3938: 3935: 3934: 3932: 3930: 3926: 3920: 3917: 3915: 3912: 3910: 3907: 3905: 3902: 3900: 3897: 3895: 3894: 3890: 3886: 3883: 3881: 3878: 3876: 3873: 3872: 3871: 3868: 3866: 3863: 3861: 3858: 3854: 3851: 3849: 3846: 3845: 3843: 3841: 3838: 3836: 3833: 3831: 3828: 3826: 3823: 3819: 3816: 3815: 3814: 3811: 3809: 3806: 3804: 3801: 3800: 3798: 3794: 3788: 3785: 3783: 3780: 3778: 3775: 3773: 3770: 3768: 3765: 3764: 3762: 3759: 3755: 3749: 3746: 3744: 3741: 3739: 3736: 3734: 3731: 3729: 3726: 3724: 3721: 3719: 3716: 3714: 3711: 3709: 3706: 3704: 3701: 3699: 3696: 3694: 3691: 3689: 3686: 3685: 3683: 3681: 3680:ISO/IEC 10646 3677: 3673: 3667: 3664: 3662: 3659: 3657: 3654: 3652: 3649: 3647: 3644: 3642: 3639: 3637: 3634: 3632: 3629: 3627: 3624: 3622: 3619: 3617: 3614: 3612: 3609: 3607: 3604: 3602: 3599: 3597: 3594: 3592: 3589: 3587: 3584: 3582: 3579: 3577: 3574: 3572: 3569: 3567: 3564: 3562: 3559: 3557: 3554: 3552: 3549: 3547: 3544: 3542: 3539: 3537: 3534: 3532: 3529: 3527: 3524: 3522: 3519: 3517: 3513: 3510: 3508: 3505: 3503: 3500: 3498: 3497:Compucolor II 3495: 3493: 3490: 3488: 3485: 3483: 3480: 3478: 3475: 3473: 3470: 3468: 3465: 3463: 3460: 3458: 3455: 3453: 3452:Acorn RISC OS 3450: 3448: 3445: 3443: 3440: 3438: 3435: 3433: 3430: 3428: 3425: 3423: 3420: 3418: 3415: 3414: 3412: 3408: 3402: 3399: 3397: 3394: 3392: 3389: 3387: 3384: 3382: 3381:8-bit Turkish 3379: 3377: 3374: 3370: 3367: 3365: 3362: 3360: 3357: 3355: 3352: 3350: 3347: 3345: 3342: 3340: 3337: 3335: 3332: 3330: 3327: 3325: 3322: 3321: 3320: 3317: 3315: 3312: 3311: 3309: 3306: 3302: 3298: 3292: 3289: 3287: 3284: 3283: 3281: 3278: 3274: 3268: 3265: 3263: 3260: 3258: 3255: 3253: 3250: 3248: 3245: 3243: 3240: 3238: 3235: 3233: 3230: 3228: 3225: 3223: 3220: 3218: 3215: 3213: 3210: 3208: 3205: 3203: 3200: 3198: 3195: 3193: 3190: 3188: 3185: 3182: 3178: 3175: 3173: 3170: 3168: 3165: 3164: 3162: 3160: 3156: 3150: 3147: 3145: 3142: 3140: 3137: 3135: 3132: 3130: 3127: 3125: 3122: 3120: 3117: 3115: 3112: 3110: 3107: 3105: 3102: 3100: 3097: 3095: 3092: 3090: 3087: 3085: 3082: 3080: 3077: 3075: 3072: 3070: 3067: 3065: 3062: 3060: 3057: 3055: 3052: 3050: 3047: 3046: 3044: 3042: 3038: 3032: 3029: 3027: 3024: 3022: 3019: 3017: 3014: 3012: 3009: 3007: 3004: 3002: 2999: 2997: 2994: 2992: 2989: 2987: 2984: 2982: 2979: 2977: 2974: 2972: 2969: 2967: 2964: 2962: 2959: 2957: 2954: 2952: 2949: 2947: 2944: 2942: 2939: 2937: 2934: 2932: 2929: 2927: 2924: 2922: 2919: 2917: 2914: 2912: 2909: 2907: 2904: 2902: 2899: 2897: 2894: 2892: 2889: 2887: 2884: 2882: 2879: 2877: 2874: 2872: 2869: 2867: 2864: 2862: 2859: 2857: 2854: 2852: 2849: 2847: 2844: 2842: 2839: 2837: 2834: 2832: 2829: 2827: 2824: 2822: 2819: 2817: 2814: 2812: 2809: 2807: 2804: 2802: 2799: 2797: 2794: 2792: 2789: 2787: 2784: 2782: 2779: 2777: 2774: 2772: 2769: 2767: 2764: 2762: 2759: 2757: 2754: 2752: 2749: 2747: 2744: 2742: 2739: 2737: 2734: 2732: 2729: 2728: 2726: 2722: 2716: 2713: 2711: 2708: 2706: 2703: 2701: 2698: 2696: 2693: 2691: 2688: 2686: 2683: 2681: 2678: 2676: 2673: 2671: 2668: 2666: 2663: 2661: 2658: 2656: 2653: 2651: 2648: 2646: 2643: 2641: 2638: 2636: 2633: 2631: 2628: 2626: 2623: 2621: 2618: 2616: 2613: 2611: 2608: 2606: 2603: 2601: 2598: 2596: 2593: 2591: 2588: 2586: 2583: 2581: 2578: 2576: 2573: 2572: 2570: 2566: 2561: 2555: 2552: 2550: 2549:ISO/IEC 10367 2547: 2545: 2542: 2541: 2539: 2537: 2533: 2527: 2524: 2522: 2519: 2517: 2514: 2512: 2509: 2507: 2504: 2502: 2499: 2497: 2494: 2492: 2489: 2487: 2484: 2482: 2479: 2477: 2474: 2472: 2469: 2467: 2464: 2462: 2459: 2457: 2454: 2452: 2449: 2447: 2444: 2442: 2439: 2437: 2434: 2432: 2429: 2427: 2424: 2422: 2419: 2417: 2414: 2412: 2409: 2407: 2404: 2402: 2399: 2397: 2394: 2392: 2389: 2387: 2384: 2382: 2379: 2377: 2374: 2373: 2371: 2367: 2361: 2358: 2356: 2353: 2351: 2348: 2346: 2343: 2341: 2338: 2336: 2333: 2329: 2326: 2324: 2321: 2320: 2319: 2316: 2315: 2313: 2309: 2301: 2298: 2296: 2293: 2291: 2288: 2286: 2283: 2282: 2280: 2276: 2273: 2271: 2268: 2267: 2265: 2261: 2258: 2257: 2255: 2251: 2248: 2246: 2243: 2241: 2238: 2236: 2233: 2231: 2228: 2226: 2223: 2221: 2218: 2216: 2213: 2211: 2208: 2206: 2203: 2201: 2200:-5 (Cyrillic) 2198: 2196: 2193: 2191: 2188: 2186: 2183: 2181: 2178: 2177: 2175: 2174: 2172: 2170: 2166: 2160: 2157: 2151: 2148: 2146: 2143: 2142: 2140: 2138: 2135: 2133: 2130: 2128: 2125: 2124: 2123: 2119: 2115: 2112: 2110: 2107: 2103: 2100: 2099: 2098: 2095: 2093: 2090: 2086: 2083: 2079: 2076: 2074: 2071: 2069: 2066: 2064: 2061: 2060: 2059: 2056: 2054: 2051: 2050: 2049: 2046: 2045: 2043: 2039: 2035: 2028: 2023: 2021: 2016: 2014: 2009: 2008: 2005: 1993: 1985: 1983: 1975: 1973: 1965: 1964: 1961: 1955: 1952: 1950: 1947: 1945: 1944: 1940: 1938: 1935: 1933: 1930: 1928: 1925: 1923: 1920: 1917: 1915: 1912: 1910: 1907: 1905: 1902: 1900: 1897: 1895: 1892: 1890: 1887: 1885: 1882: 1880: 1877: 1875: 1872: 1868: 1865: 1864: 1863: 1860: 1858: 1855: 1853: 1852: 1848: 1846: 1843: 1841: 1838: 1836: 1833: 1832: 1830: 1826: 1820: 1817: 1815: 1814:System Module 1812: 1810: 1807: 1805: 1802: 1800: 1797: 1795: 1792: 1790: 1787: 1785: 1782: 1780: 1777: 1775: 1772: 1770: 1767: 1765: 1762: 1760: 1757: 1755: 1752: 1750: 1747: 1745: 1742: 1740: 1737: 1735: 1732: 1731: 1729: 1727: 1722: 1716: 1713: 1711: 1708: 1706: 1703: 1701: 1698: 1696: 1693: 1691: 1688: 1686: 1683: 1681: 1678: 1677: 1675: 1673: 1672:Bus standards 1669: 1663: 1660: 1658: 1655: 1653: 1650: 1648: 1645: 1643: 1640: 1637: 1634: 1631: 1628: 1625: 1622: 1621: 1619: 1617: 1613: 1607: 1604: 1602: 1599: 1597: 1594: 1592: 1589: 1587: 1584: 1582: 1579: 1577: 1574: 1572: 1569: 1568: 1566: 1564: 1558: 1552: 1549: 1547: 1544: 1542: 1539: 1537: 1534: 1532: 1529: 1527: 1524: 1522: 1519: 1515: 1512: 1511: 1510: 1507: 1505: 1502: 1500: 1497: 1495: 1492: 1490: 1487: 1485: 1482: 1480: 1477: 1475: 1472: 1470: 1467: 1465: 1462: 1460: 1457: 1456: 1454: 1452: 1446: 1440: 1437: 1434: 1431: 1428: 1425: 1422: 1419: 1416: 1413: 1411: 1408: 1406: 1403: 1400: 1397: 1395: 1392: 1390: 1387: 1384: 1381: 1379: 1376: 1374: 1371: 1369: 1366: 1364: 1361: 1359: 1356: 1354: 1351: 1348: 1345: 1343: 1340: 1338: 1335: 1332: 1329: 1326: 1323: 1320: 1317: 1316: 1314: 1312: 1306: 1296: 1293: 1291: 1288: 1287: 1285: 1281: 1275: 1272: 1270: 1267: 1265: 1262: 1259: 1255: 1252: 1248: 1245: 1243: 1240: 1239: 1238: 1235: 1234: 1232: 1230: 1226: 1220: 1217: 1213: 1210: 1209: 1208: 1205: 1201: 1198: 1197: 1196: 1193: 1191: 1188: 1186: 1183: 1182: 1180: 1178: 1174: 1168: 1165: 1163: 1160: 1157: 1154: 1153: 1151: 1149: 1145: 1142: 1140: 1135: 1134:architectures 1129: 1124: 1113: 1112:Robert Palmer 1110: 1107: 1104: 1101: 1098: 1095: 1092: 1091: 1089: 1085: 1081: 1074: 1069: 1067: 1062: 1060: 1055: 1054: 1051: 1045: 1042: 1041: 1037: 1024: 1020: 1016: 1011: 1010: 1006: 997: 991: 988: 985: 974: 970: 969: 962: 959: 947: 943: 939: 935: 928: 925: 913: 909: 905: 901: 897: 891: 889: 885: 874:on 2012-10-14 873: 869: 865: 864: 856: 854: 850: 839:on 2005-03-31 838: 834: 827: 825: 821: 818: 815: 812: 800: 796: 795: 787: 785: 783: 781: 779: 777: 775: 771: 756: 752: 745: 744: 736: 734: 732: 730: 726: 710: 706: 699: 698: 690: 688: 684: 677: 673: 670: 668: 665: 663: 660: 658: 655: 652: 649: 647: 644: 642: 639: 637: 634: 633: 629: 622: 619: 616: 613: 610: 607: 604: 601: 598: 597: 593: 590: 587: 584: 581: 578: 575: 572: 569: 568: 564: 561: 558: 555: 552: 549: 546: 543: 540: 539: 535: 532: 529: 526: 523: 520: 517: 514: 511: 510: 506: 503: 500: 497: 494: 491: 488: 485: 482: 481: 455: 443: 440: 435: 432: 427: 425: 421: 420:symbol tables 405: 387: 369: 366: 364: 356: 354: 352: 341: 334: 331: 328: 325: 322: 319: 316: 313: 310: 309: 305: 302: 299: 296: 293: 290: 287: 284: 281: 280: 276: 273: 270: 267: 264: 261: 258: 255: 252: 251: 247: 244: 241: 238: 235: 232: 229: 226: 223: 222: 218: 215: 212: 209: 206: 203: 200: 197: 194: 193: 167: 155: 152: 147: 145: 140: 138: 134: 130: 126: 121: 119: 118:symbol tables 111: 109: 106: 104: 100: 96: 92: 88: 84: 80: 76: 72: 68: 64: 59: 57: 53: 49: 45: 41: 37: 33: 29: 25: 21: 20:RADIX 50 3947:ISO/IEC 6429 3904:Stanford/ITS 3891: 3825:ARIB STD-B24 3606:Sega SC-3000 3507:DEC RADIX 50 3506: 2544:ISO/IEC 8859 2536:ISO/IEC 2022 2281:Adaptations 2240:-14 (Celtic) 2235:-13 (Baltic) 2225:-10 (Nordic) 2220:-9 (Turkish) 2169:ISO/IEC 8859 1941: 1849: 1809:Star coupler 1705:TURBOchannel 1651: 1551:Digital UNIX 1102:(co-founder) 1027:. Retrieved 1018: 990: 977:. Retrieved 967: 961: 950:. Retrieved 937: 927: 916:. Retrieved 903: 876:. Retrieved 872:the original 862: 841:. Retrieved 837:the original 809: 803:. Retrieved 793: 762:. Retrieved 742: 716:. Retrieved 696: 438: 428: 388: 370: 367: 362: 360: 347: 345: 150: 141: 136: 122: 115: 107: 83:DECSYSTEM-20 60: 35: 31: 27: 23: 19: 18: 3666:ZX Spectrum 3621:Sinclair QL 3457:Amstrad CPC 3376:8-bit Greek 3303:terminals ( 3016:Iran System 2568:("scripts") 2215:-8 (Hebrew) 2205:-6 (Arabic) 2102:ISO/IEC 646 1561:Programming 1274:Alpha 21464 1269:Alpha 21364 1264:Alpha 21264 1254:Alpha 21164 1237:Alpha 21064 1106:Gordon Bell 672:Split octal 447:significant 439:PDP-11, VAX 159:significant 58:computers. 42:created by 4044:Categories 3952:JIS X 0211 3860:ISO-IR-169 3713:UTF-EBCDIC 3279:code pages 3006:CSX+ Indic 2610:Devanagari 2565:Code pages 2486:LST 1590-4 2456:JIS X 0213 2451:JIS X 0212 2446:JIS X 0208 2441:JIS X 0201 2406:GOST 10859 2328:CCCII/EACC 2230:-11 (Thai) 2210:-7 (Greek) 2145:background 2068:Wabun/Kana 1867:HP-Interex 1290:MicroPRISM 1139:processors 1087:Key people 1029:2020-06-06 979:2020-06-18 952:2020-06-19 918:2020-06-06 878:2012-10-14 843:2005-03-31 805:2020-06-18 764:2020-06-04 718:2014-07-10 678:References 662:Packed BCD 137:DEC Squoze 4005:MICR code 3840:IEC-P27-1 3818:ISO-IR-68 3723:DIN 91379 3601:SAM CoupĂ© 3536:GSM 03.38 3526:Galaksija 3021:KamenickĂ˝ 3001:CSX Indic 2710:Ukrainian 2496:Shift JIS 2476:KS X 1002 2471:KS X 1001 2396:DIN 66003 2391:CNS 11643 2159:Transcode 2137:ITU T.101 2063:Non-Latin 1840:AltaVista 1744:DECwriter 1715:VAXBI bus 1662:Technical 1638:(Turkish) 1601:VAX MACRO 1563:languages 1449:Operating 1331:VT50/VT52 1311:terminals 1295:StrongARM 1094:Ken Olsen 48:DECsystem 4010:Mojibake 3865:ISO 2033 3830:Fieldata 3808:ASMO 449 3718:GB 18030 3678: / 3626:Teletext 3616:Sharp MZ 3546:HP FOCAL 3541:HP Roman 3472:Atari ST 3462:Apple II 2996:CS Indic 2690:Romanian 2665:Keyboard 2645:Gurmukhi 2640:Gujarati 2630:Georgian 2605:Cyrillic 2600:Croatian 2575:Armenian 2481:LST 1564 2466:KPS 9566 2426:GB 18030 2421:GB 12052 2416:GB 12345 2401:ELOT 927 2335:ISO 5426 2295:Estonian 2132:ITU T.61 2122:Teletext 2118:Videotex 2092:Fieldata 2078:Cyrillic 1982:Category 1851:CPU Wars 1769:Gold key 1726:hardware 1652:RADIX 50 1591:MACRO-11 1586:MACRO-10 1309:Computer 1023:Archived 1019:Hackaday 946:Archived 912:Archived 898:(2018). 755:Archived 709:Archived 630:See also 588:* % 348:Radix 50 127:used in 105:, VAX). 69:machine 32:RADIX-50 3899:SEASCII 3893:MojikyĹŤ 3880:KOI8-RU 3803:ABICOMP 3676:Unicode 3586:PETSCII 3576:NEC APC 3512:DEC MCS 3467:ATASCII 3364:Swedish 3349:Finnish 3334:Spanish 3026:Mazovia 2991:ABICOMP 2700:Turkish 2655:Iceland 2563:Mac OS 2506:TIS-620 2411:GB 2312 2386:BraSCII 2376:ArmSCII 2114:Teletex 2073:Chinese 1992:Commons 1904:PALcode 1789:PALcode 1759:Firefly 1739:DECtape 1734:DECtalk 1685:Massbus 1632:(Greek) 1571:BASIC-8 1531:VAX/VMS 1526:TOPS-20 1474:TOPS-10 1451:systems 1258:21164PC 636:Base 40 144:six-bit 28:RADIX50 3909:Symbol 3885:KOI8-U 3875:KOI8-R 3743:TACE16 3733:CESU-8 3728:BOCU-1 3708:UTF-32 3703:UTF-16 3646:WISCII 3636:TRS-80 3556:SQUOZE 3551:HP RPL 3391:Hebrew 3386:SI 960 3354:French 3277:EBCDIC 3167:CER-GS 2650:Hebrew 2625:Gaelic 2590:Celtic 2580:Arabic 2526:YUSCII 2516:VISCII 2501:SI 960 2491:PASCII 2340:5426-2 2318:MARC-8 2053:Needle 1937:TD/SMP 1857:DECnet 1845:Compaq 1724:Other 1710:Unibus 1642:Hebrew 1541:Ultrix 1536:VAXELN 1521:DSM-11 1509:RSX-11 1504:RSTS/E 1494:DOS-11 1479:RSX-15 1464:4K DMS 1459:DECsys 1435:(1994) 1429:(1993) 1423:(1990) 1421:VT1000 1417:(1990) 1401:(1987) 1385:(1983) 1349:(1978) 1333:(1975) 1327:(1972) 1321:(1970) 1212:Mariah 1155:LSI-11 1148:PDP-11 811:PDP-11 103:PDP-11 101:word ( 99:16-bit 95:PDP-15 89:word ( 87:18-bit 79:PDP-10 67:36-bit 54:, and 36:RAD-50 3980:CCSID 3853:8-bit 3848:7-bit 3844:INIS 3698:UTF-8 3693:UTF-7 3688:UTF-1 3566:LMBCS 3502:CP/M+ 3344:Dutch 3329:Swiss 3011:CWI-2 2715:VT100 2685:Roman 2680:Ogham 2660:Inuit 2635:Greek 2521:VSCII 2511:TSCII 2461:KOI-7 2436:ISCII 2431:HKSCS 2323:ANSEL 2285:Welsh 2109:BCDIC 2097:ASCII 2058:Morse 1954:WPS-8 1949:VT640 1922:Sixel 1914:ReGIS 1884:FX!32 1862:DECUS 1835:AdvFS 1779:LK421 1774:LK201 1690:Q-Bus 1596:MUMPS 1581:FOCAL 1576:DIBOL 1499:RT-11 1484:TSS/8 1439:VT525 1433:VT520 1427:VT510 1415:VT420 1410:VT340 1405:VT330 1399:VT320 1394:VT241 1389:VT240 1383:VT220 1378:VT180 1373:VT131 1368:VT105 1363:VT103 1358:VT102 1353:VT101 1347:VT100 1283:Other 1247:21068 1242:21066 1229:Alpha 1207:Rigel 758:(PDF) 747:(PDF) 712:(PDF) 701:(PDF) 653:(DPD) 486:space 449:bits 424:RT-11 363:MOD40 198:space 161:bits 91:PDP-9 75:PDP-6 63:octal 24:RAD50 3914:TRON 3767:Cork 3738:SCSU 3661:ZX81 3656:ZX80 3651:XCCS 3581:NeXT 3561:LICS 3516:NRCS 3477:BICS 3447:1058 3442:1057 3437:1056 3432:1055 3427:1054 3422:1053 3417:1052 3291:DKOI 3247:1270 3242:1258 3237:1257 3232:1256 3227:1255 3222:1254 3217:1253 3212:1252 3207:1251 3202:1250 3192:1169 3149:1133 3144:1124 3139:1046 3134:1019 3129:1018 3124:1017 3119:1016 3114:1015 3109:1014 3104:1013 3099:1012 3094:1010 3089:1009 3084:1008 3079:1006 2986:3846 2981:1127 2976:1118 2971:1117 2966:1116 2961:1115 2956:1098 2951:1044 2946:1043 2941:1042 2936:1040 2931:1034 2695:Sámi 2381:Big5 2360:6862 2355:6438 2350:5428 2345:5427 2275:Sámi 2150:sets 2116:and 1819:TU81 1804:RL02 1799:RK05 1794:RA90 1546:MICA 1489:OS/8 1342:VT62 1337:VT55 1325:GT40 1319:VT05 1219:NVAX 1195:CVAX 1185:V-11 1167:J-11 1162:T-11 1158:F-11 599:100 570:011 541:010 512:001 483:000 478:111 475:110 472:101 469:100 466:011 463:010 460:001 457:000 445:Most 377:6606 373:1683 311:100 282:011 253:010 224:001 195:000 190:111 187:110 184:101 181:100 178:011 175:010 172:001 169:000 157:Most 71:word 3870:KOI 3787:OT1 3782:OMS 3777:OML 3772:LY1 3758:TeX 3571:MSX 3531:GEM 3487:CDC 3305:VTx 3301:DEC 3187:950 3181:GBK 3177:936 3172:932 3074:922 3069:921 3064:915 3059:912 3054:896 3049:895 3031:MIK 2926:951 2921:950 2916:949 2911:942 2906:936 2901:932 2896:904 2891:903 2886:899 2881:897 2876:869 2871:868 2866:867 2861:866 2856:865 2851:864 2846:863 2841:862 2836:861 2831:860 2826:859 2821:858 2816:857 2811:856 2806:855 2801:853 2796:852 2791:851 2786:850 2781:778 2776:777 2771:776 2766:775 2761:773 2756:770 2751:737 2746:720 2741:708 2736:668 2731:437 1514:IAS 1469:COS 1200:SOC 1177:VAX 585:% . 383:999 365:). 131:'s 129:IBM 56:VAX 52:PDP 34:or 22:or 4046:: 3835:HZ 1021:. 1017:. 940:. 936:. 910:. 902:. 887:^ 866:. 852:^ 823:^ 773:^ 728:^ 686:^ 623:9 594:1 582:$ 565:W 536:O 507:G 414:, 410:, 408:$ 398:, 394:, 392:$ 381:63 335:% 332:$ 306:U 277:M 248:E 219:6 93:, 77:, 50:, 30:, 3514:/ 3307:) 3183:) 3179:( 2120:/ 2026:e 2019:t 2012:v 1260:) 1256:( 1136:, 1072:e 1065:t 1058:v 1032:. 998:. 982:. 955:. 921:. 881:. 846:. 767:. 721:. 620:8 617:7 614:6 611:5 608:4 605:3 602:2 591:0 579:Z 576:Y 573:X 562:V 559:U 556:T 553:S 550:R 547:Q 544:P 533:N 530:M 527:L 524:K 521:J 518:I 515:H 504:F 501:E 498:D 495:C 492:B 489:A 416:% 412:. 400:* 396:% 350:8 329:. 326:Z 323:Y 320:X 317:W 314:V 303:T 300:S 297:R 294:Q 291:P 288:O 285:N 274:L 271:K 268:J 265:I 262:H 259:G 256:F 245:D 242:C 239:B 236:A 233:9 230:8 227:7 216:5 213:4 210:3 207:2 204:1 201:0 73:(

Index

character encoding
Digital Equipment Corporation
DECsystem
PDP
VAX
octal
36-bit
word
PDP-6
PDP-10
DECSYSTEM-20
18-bit
PDP-9
PDP-15
16-bit
PDP-11
symbol tables
SQUOZE character encoding scheme
IBM
SHARE Operating System
six-bit
programming languages
symbol tables
RT-11
Digital Equipment Corporation
Base 40
Base conversion
Chen–Ho encoding
Densely packed decimal
Hertz encoding

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