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IBM Personal Computer XT

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IBM's recent announcement that it will formally discontinue its PC XT line and eventually phase out its PC AT came as no surprise to many corporate users. William Lowe, president of IBM's Entry Systems Division in Boca Raton, Fla., told Wall Street analysts on June 30 that the only remaining XT, the
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The new floppy disk-based versions of the PC XT basically just strips the 10MB hard disk from the earlier unit. The machines come with base memory of 256KB and are available in either single or dual 360 KB diskette versions. A single diskette unit with keyboard and 256 KB of main memory is priced at
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The XT addressed the problem by adding three extra expansion slots for a total of eight. While the slots themselves are identical to those in the original PC, the amount of physical space in the chassis differs, so two of the new slots (located behind the hard drive) cannot accept full-length cards.
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The number of expansion slots in the original IBM PC was a limiting factor for the product, since essential components (such as the video controller, disk controller and printer interface) each came as separate expansion cards and could quickly fill up all five available slots, requiring the user to
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The 5161 is an expansion chassis using an identical case and power supply to the XT, but instead of a system board, provides a backplane with eight card slots. It connects to the main system unit using an Extender Card in the system unit and a Receiver Card in the Expansion Unit, connected by a
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The XT was not offered in a floppy-only model for its first two years on the market, although the standard ribbon cable with two floppy connectors was still included. At that time, in order to get a second floppy drive, the user had to purchase the 5161 expansion chassis.
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is 130 watts, an upgrade from the original PC. Those sold in the US were configured for 120 V AC only and could not be used with 240 V mains supplies. XTs with 240 V-compatible power supplies were later sold in international markets. Both were rated at 130 watts.
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swap cards in and out as tasks demanded. Some PC clones addressed this problem by integrating components into the motherboard to free up slots, while peripheral manufacturers produced products which integrated multiple functions into one card.
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The XT was regarded as an incremental improvement over the PC and a disappointment compared to the next-generation successor that some had anticipated. Compared to the original IBM PC, the XT has the following major differences:
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The XT has a desktop case similar to that of the IBM PC. It weighs 32 pounds (15 kg) and is approximately 19.5 inches (50 cm) wide by 16 inches (41 cm) deep by 5.5 inches (14 cm) high.
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Submodels 267, 277 and 088 had the original keyboard, but 3.5" floppy drives became available and 20MB Seagate ST-225 hard disks in 5.25" half-height size replaced the full-height 10 MB drives.
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The Expansion Unit can also contain extra memory, but the Extender card inserts wait states for memory in the Expansion Unit, so it may be preferable to install memory into the main system unit.
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PC. The latter two companies were sued by IBM and settled out of court, agreeing to re-implement their BIOS in a way that did not violate IBM's copyrights. AT&T, who owned a 25% share of
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or other software that required large amounts of arithmetical calculations. Only software that was especially written to take advantage of the coprocessor would show a significant speedup.
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It shipped with 640 KB RAM standard, an AT-style 1.2 MB high-density diskette drive and a 20 MB hard disk. Despite these features, reviews rated it as a poor market value.
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in June 1984, which was a re-branded version of the Olivetti M24. The PC 6300 offered the 16-bit 8086 clocked at a faster 8 MHz speed that was technically superior to IBM's PC XT.
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The XT was well received, although PC DOS 2.0 was regarded as a greater improvement than any of the hardware changes, and by the end of 1983 IBM was selling every unit they made.
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also came out in March 1983, and would prove a popular competitor. Sometimes called the "first PC clone" and first "legal clone", that distinction may go to another offering:
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Submodels 268, 278 and 089 came with 101-key keyboards (essentially the IBM Model M, but in a modified variant that used the XT's keyboard protocol and lacked LEDs).
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XT 286, will be discontinued within three months and that IBM is working with dealers and large accounts to determine how many more ATs it will make to fill orders.
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format, providing 180K/360K (single- vs. dual-sided) capacity per disk, compared to the 160K/320K provided by the 8-sector format of previous releases.
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IBM did not specify an expanded form of "XT" on the machine, press releases, brochures or documentation, but some publications expanded the term as "
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In addition, the spacing of the slots is narrower than in the original PC, making it impossible to install some multi-board cards.
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served as the direct replacement for the XT in that PS/2 line. Unlike higher-end entries in the PS/2 line, which feature the
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Submodel 068 and 078, released in 1985, offered dual-floppy configurations without a hard drive as well, and the new
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Personal Computer Family Service Information Manual (January 1989), IBM document SA38-0037-00, pages 8-1 to 8-2
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Personal Computer Family Service Information Manual (January 1989), IBM document SA38-0037-00, pages 7-1 to 7-3
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The XT 286 uses a 157-watt power supply, which can internally switch between 115 or 230 V AC operation.
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Personal Computer Family Service Information Manual (January 1989), IBM document SA38-0037-00, page 14-1
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Personal Computer Family Service Information Manual (January 1989), IBM document SA38-0037-00, page 6-2
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In 1986, the 256–640 KB motherboard models were launched, which switched to half-height drives.
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custom cable. The 5161 shipped with a 10 MB hard drive, and had room for a second one.
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and extra expansion slots, it is very similar to the original IBM PC model 5150 from 1981.
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Both the original XT and the XT/286 was discontinued in late 1987 after the launch of the
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The 5161 can be connected to either an XT or to the earlier 5150 (the original IBM PC).
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Personal Computer Hardware Reference Library: Guide to Operations, Personal Computer XT
2185:(4.0 ed.). International Business Machines Corporation. April 6, 1987 – via 1974: 411: 4073: 4021: 3852: 3847: 3842: 3837: 3832: 3827: 3822: 3817: 3812: 3804: 3794: 3789: 3784: 3779: 3769: 3764: 3759: 3754: 3749: 3744: 3739: 3734: 3726: 3680: 3612: 3602: 3597: 3592: 3584: 3136: 3104: 3099: 3094: 3089: 3084: 3069: 3064: 3059: 3054: 3049: 3044: 3039: 2855: 2850: 2738: 2235: 2128: 2046: 567: 335: 254: 79: 3285: 2007: 1920: 1878: 1384:
Without fixed disk adapter; stock onboard RAM increased to 384 KB in June 1984
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With fixed disk adapter; stock onboard RAM increased to 384 KB in June 1984
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expansion bus, the Model 30 contains 8-bit ISA bus slots, exactly like the XT.
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co-processor board existed as well, but it had its own System Unit number, the
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Similarly to the original IBM PC, the XT main board included a socket for the
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Knights of the New Technology: The Inside Story of Canada's Computer Elite
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Bridges, Linda; Laura Brennan; Jim Forbes; Bruce Stephen (July 7, 1987).
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line, released on March 8, 1983. Except for the addition of a built-in
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A 10 MB hard drive is included as standard equipment, with a
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IBM Personal System/2 and IBM Personal Computer Product Reference
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processor. Despite being marketed as a lower-tier model than the
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Otherwise the specifications are identical to the original PC.
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The number of expansion slots is increased from five to eight
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PC-based IBM-compatible mainframes#Personal Computer XT/370
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Without printer adapter, fixed disk adapter, and keyboard
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IBM PC/XT 5160 dual floppy drives with 5153 Color Monitor
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Submodels 568, 588, and 589 were used as basis for the
2712:, By David Needle, Page 5, January 31, 1983, InfoWorld 2482: 2480: 2478: 2476: 2474: 410:. The XT BIOS also displays a memory count during the 2537:
Ristelhueber, Robert; Ira Sager (September 8, 1986).
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Asterisk (*) denotes a model released in Japan only
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(March 23, 1987). 2876: 2291: 2289: 2287: 2285: 2283: 2281: 2257: 2255: 2253: 2251: 2223: 2221: 2219: 1929: 1740: 324:Base RAM is increased to at least 128 KB 2530: 2261: 2172: 2170: 2168: 2166: 2164: 2162: 2036: 2034: 2032: 2030: 541:(model 5162) was released with a 6 MHz 2395: 2393: 2391: 2389: 2387: 2385: 2308: 2160: 2158: 2156: 2154: 2152: 2150: 2148: 2146: 2144: 2142: 2045:(2nd ed.). Que Books. pp. 59–79. 1935: 1922:IBM Personal Computer Questions and Answers 494:Submodel 788 was the only XT sold with the 2890: 2883: 2869: 2516:"IBM Gives Up on the Personal XT/, AT/370" 2510: 2508: 2506: 2278: 2248: 2216: 2014:. Vol. 8, no. 11. November 1983. 1834: 1747: 1733: 526: 47: 38: 2754: 2647:"Compaq puts out First Legal Clone Claim" 2193: 2027: 1854:Upgrading and Repairing PCs, 10th Edition 1680: 654: 509:instructions. An XT-based machine with a 471:emulation, was released in October 1983. 447: 2446: 2444: 2442: 2440: 2399: 2382: 2353: 2351: 2139: 2110: 2087: 2085: 2066: 2064: 2062: 1835:Enterprise, I. D. G. (August 11, 1986). 482:became available as video card options. 451: 27:Personal computer model released in 1983 2503: 2360:"IBM moves to reduce PC XT inventories" 2227: 2199: 2123:. InfoWorld Media Group, Inc. pp.  2040: 659: 402:Like the original PC, the XT came with 14: 4105:Computer-related introductions in 1983 4092: 2563: 2486: 2340:(27). Ziff-Davis: 4 – via Gale. 2295: 1895: 1728:Timeline of the IBM Personal Computer 460:IBM made several submodels of the XT. 2864: 2564:Archer, Rowland Jr. (November 1983). 2450: 2437: 2412:(14). Ziff-Davis: 1 – via Gale. 2357: 2348: 2082: 2059: 1705:'s Eagle 1600 that September and the 351:for the cassette interface is removed 195:1-channel square-wave/1-bit digital ( 2002: 2000: 1998: 1996: 1889: 1873: 1871: 1869: 1867: 584:List of IBM Personal Computer models 269:List of IBM Personal Computer models 2851:XT with 256 KB on system board 1962: 598: 577: 24: 3940:ThinkPad 240 with Transmeta Crusoe 2298:"I.B.M. Optimistic on Newest PC's" 2296:Sanger, David E. (June 24, 1987). 358: 25: 4121: 2912:PC business acquisition by Lenovo 2834: 2244:– via the Internet Archive. 1993: 1936:Freeze, Ken (December 16, 1985). 1864: 386: 371: 3976:Professional Graphics Controller 2698:Hardware:Review:Seequa Chameleon 2451:Libes, Sol (February 28, 1984). 589:IBM Personal Computer XT models 467:, a variant of the XT featuring 284:) is the second computer in the 280:(model 5160, often shortened to 2803: 2778: 2748: 2727: 2715: 2703: 2691: 2679: 2665: 2639: 2609: 2584: 2557: 2487:Henkel, T. (October 24, 1983). 2416: 2400:Whitmore, Sam (April 8, 1986). 2094: 2073: 1215:Shipped with Enhanced Keyboard 1105:Shipped with Enhanced Keyboard 995:Shipped with Enhanced Keyboard 4027:Industry Standard Architecture 2262:Staff writer (June 11, 1984). 2018: 1956: 1845: 1828: 620: 612: 566:(PS/2) line. The 8086-powered 13: 1: 2200:Sandler, Corey (April 1983). 1969:. InfoWorld Media Group, Inc. 1821: 480:Professional Graphics Adapter 391:PC DOS 2.0 offers a 9-sector 2592:"Compaq I Portable computer" 2566:"The IBM PC XT and DOS 2.00" 2358:Sager, Ira (April 8, 1985). 1896:Barkow, Tim (October 1996). 1672: 215:W: 19.5 in (50 cm) 7: 2810:EAGLE'S BATTLE FOR SURVIVAL 2792:, p. 50, July 18, 1983 2231:Upgrading and Repairing PCs 2043:Upgrading and Repairing PCs 1804: 1720: 311: 217:H: 5.5 in (14 cm) 10: 4126: 4100:X86 IBM personal computers 3981:Multi-Color Graphics Array 3961:Monochrome Display Adapter 2905:Influence on the PC market 2829:. IBM Part Number 6936831. 2304:: D4 – via ProQuest. 2202:"IBM Drops the First Shoe" 1919:Dievendorff, Dick (1981). 581: 414:, unlike the original PC. 219:D: 16 in (41 cm) 4004: 3971:Enhanced Graphics Adapter 3953: 3922: 3894: 3861: 3803: 3725: 3679: 3611: 3583: 3524: 3474: 3454: 3414: 3364: 3329: 3320: 3311: 3238: 3229: 3186: 3012: 2930: 2921: 2899: 2737:, Key Porter Books, 1983 520: 476:Enhanced Graphics Adapter 264: 241: 231: 223: 211: 203: 188: 174: 166: 162:128 KB – 640 KB 158: 145: 118: 103: 85: 75: 65: 55: 46: 37: 2722:Review Responses: Seequa 2520:Computer Business Review 2370:. Sage Publications: 24 278:IBM Personal Computer XT 249:IBM Personal Computer AT 170:10–20 MB hard drive 33:IBM Personal Computer XT 3996:Extended Graphics Array 2549:. Sage Publications: 1 2228:Mueller, Scott (1994). 2101:"The AT Clone from IBM" 2041:Mueller, Scott (1992). 498:as a standard feature. 295: 227:32 lb (15 kg) 3966:Color Graphics Adapter 2786:"Corona advertisement" 2621:www.modernmechanix.com 2617:"First PC Clone Claim" 2526:on September 20, 2023. 1691:Columbia Data Products 1681:Clones and competition 496:Color Graphics Adapter 457: 448:Revisions and variants 91:; 41 years ago 3266:PS/2 Note and PS/note 2710:The Chameleon mystery 2463:(28). Ziff-Davis: 25 2234:(4th ed.). Que. 1925:. IBM. pp. 9–10. 1908:on November 12, 2015. 1860:. 1998. p. 1115. 1209:two 360 KB 1154:two 360 KB 879:two 360 KB 564:IBM Personal System/2 455: 434:computer aided design 286:IBM Personal Computer 236:IBM Personal Computer 3986:Video Graphics Array 2596:www.oldcomputers.net 1898:"The Bottom Feeders" 257:(direct replacement) 3025:Industrial Computer 2686:Aboard the Columbia 2653:. December 22, 2016 2008:"Inside the IBM PC" 647:Maximum onboard RAM 590: 302:eXtended Technology 34: 4059:Music Feature Card 2894:personal computers 2758:(September 1983). 2572:. pp. 294–304 2374:– via Gale. 2302:The New York Times 2107:, January 13, 1987 1985:has generic name ( 588: 458: 89:March 8, 1983 32: 4087: 4086: 4022:IBM PC compatible 3890: 3889: 3886: 3885: 3881: 3880: 3877: 3876: 3577: 3576: 3234: 3182: 3181: 2846:Photo galleries: 2553:– via Gale. 2467:– via Gale. 1841:. IDG Enterprise. 1802: 1801: 1670: 1669: 640:Stock onboard RAM 568:IBM PS/2 Model 30 274: 273: 255:IBM PS/2 Model 30 80:Personal computer 61:IBM XT, PC/XT, XT 16:(Redirected from 4117: 4110:16-bit computers 3935:Power Series 600 3581: 3580: 3327: 3326: 3323: 3322: 3318: 3317: 3236: 3235: 3233: 2928: 2927: 2914: 2907: 2885: 2878: 2871: 2862: 2861: 2812: 2807: 2801: 2800: 2799: 2797: 2782: 2776: 2775: 2773: 2771: 2756:Pournelle, Jerry 2752: 2746: 2731: 2725: 2719: 2713: 2707: 2701: 2695: 2689: 2683: 2677: 2676: 2669: 2663: 2662: 2660: 2658: 2643: 2637: 2636: 2634: 2632: 2623:. Archived from 2613: 2607: 2606: 2604: 2602: 2588: 2582: 2581: 2579: 2577: 2561: 2555: 2554: 2534: 2528: 2527: 2512: 2501: 2500: 2484: 2469: 2468: 2448: 2435: 2434: 2428: 2420: 2414: 2413: 2397: 2380: 2379: 2355: 2346: 2345: 2325: 2306: 2305: 2293: 2276: 2275: 2259: 2246: 2245: 2225: 2214: 2213: 2197: 2191: 2190: 2184: 2174: 2137: 2136: 2114: 2108: 2098: 2092: 2089: 2080: 2077: 2071: 2068: 2057: 2056: 2038: 2025: 2022: 2016: 2015: 2004: 1991: 1990: 1984: 1980: 1978: 1970: 1960: 1954: 1953: 1951: 1949: 1933: 1927: 1926: 1916: 1910: 1909: 1893: 1887: 1886: 1875: 1862: 1861: 1859: 1849: 1843: 1842: 1832: 1749: 1742: 1735: 1725: 1724: 1715:AT&T PC 6300 1695:Seequa Chameleon 1629: 1624: 1575: 1570: 1519: 1514: 1463: 1458: 1406: 1401: 1349: 1344: 1292: 1287: 1235: 1180: 1175: 1125: 1120: 1070: 1065: 1015: 1010: 960: 955: 905: 900: 850: 845: 795: 790: 740: 735: 685: 680: 661: 656: 651: 644: 637: 622: 614: 600: 591: 587: 578:Comparison table 530: 120:Operating system 114: 112: 99: 97: 92: 58: 51: 42: 35: 31: 21: 4125: 4124: 4120: 4119: 4118: 4116: 4115: 4114: 4090: 4089: 4088: 4083: 4000: 3949: 3918: 3902:Palm Top PC 110 3882: 3873: 3857: 3799: 3721: 3675: 3607: 3573: 3520: 3491:701 "Butterfly" 3470: 3450: 3410: 3360: 3307: 3225: 3178: 3008: 2923: 2917: 2910: 2903: 2895: 2889: 2837: 2832: 2816: 2815: 2808: 2804: 2795: 2793: 2784: 2783: 2779: 2769: 2767: 2753: 2749: 2732: 2728: 2720: 2716: 2708: 2704: 2696: 2692: 2684: 2680: 2671: 2670: 2666: 2656: 2654: 2645: 2644: 2640: 2630: 2628: 2627:on May 14, 2021 2615: 2614: 2610: 2600: 2598: 2590: 2589: 2585: 2575: 2573: 2562: 2558: 2543:Electronic News 2535: 2531: 2514: 2513: 2504: 2485: 2472: 2449: 2438: 2426: 2422: 2421: 2417: 2398: 2383: 2364:Electronic News 2356: 2349: 2326: 2309: 2294: 2279: 2268:Electronic News 2260: 2249: 2242: 2226: 2217: 2198: 2194: 2182: 2176: 2175: 2140: 2115: 2111: 2099: 2095: 2090: 2083: 2078: 2074: 2069: 2060: 2053: 2039: 2028: 2023: 2019: 2006: 2005: 1994: 1982: 1981: 1972: 1971: 1961: 1957: 1947: 1945: 1934: 1930: 1917: 1913: 1894: 1890: 1877: 1876: 1865: 1857: 1851: 1850: 1846: 1833: 1829: 1824: 1807: 1793: 1791: 1753: 1723: 1713:, released the 1687:Compaq Portable 1683: 1675: 649: 648: 642: 641: 635: 634: 632: 624: 616: 606:Date withdrawn 603:Date announced 586: 580: 535: 534: 533: 523: 450: 389: 374: 361: 359:Expansion slots 332:disk controller 314: 298: 260: 218: 216: 154:@ 4.77 MHz 110: 108: 107:April 1987 95: 93: 90: 56: 28: 23: 22: 15: 12: 11: 5: 4123: 4113: 4112: 4107: 4102: 4085: 4084: 4082: 4081: 4076: 4071: 4066: 4061: 4056: 4051: 4050: 4049: 4044: 4034: 4032:IntelliStation 4029: 4024: 4019: 4014: 4008: 4006: 4002: 4001: 3999: 3998: 3993: 3988: 3983: 3978: 3973: 3968: 3963: 3957: 3955: 3954:Video hardware 3951: 3950: 3948: 3947: 3942: 3937: 3932: 3926: 3924: 3920: 3919: 3917: 3916: 3915: 3914: 3904: 3898: 3896: 3892: 3891: 3888: 3887: 3884: 3883: 3879: 3878: 3875: 3874: 3872: 3871: 3865: 3863: 3859: 3858: 3856: 3855: 3850: 3845: 3840: 3835: 3830: 3825: 3820: 3815: 3809: 3807: 3801: 3800: 3798: 3797: 3792: 3787: 3782: 3777: 3772: 3767: 3762: 3757: 3752: 3747: 3742: 3737: 3731: 3729: 3723: 3722: 3720: 3719: 3716: 3713: 3710: 3707: 3704: 3701: 3698: 3695: 3692: 3689: 3685: 3683: 3677: 3676: 3674: 3673: 3668: 3663: 3658: 3653: 3648: 3643: 3638: 3633: 3628: 3623: 3617: 3615: 3609: 3608: 3606: 3605: 3600: 3595: 3589: 3587: 3578: 3575: 3574: 3572: 3571: 3566: 3561: 3556: 3551: 3546: 3541: 3536: 3530: 3528: 3522: 3521: 3519: 3518: 3513: 3508: 3503: 3498: 3493: 3488: 3482: 3480: 3472: 3471: 3469: 3468: 3462: 3460: 3452: 3451: 3449: 3448: 3443: 3438: 3433: 3428: 3422: 3420: 3412: 3411: 3409: 3408: 3403: 3398: 3393: 3388: 3383: 3378: 3372: 3370: 3362: 3361: 3359: 3358: 3353: 3348: 3343: 3337: 3335: 3321: 3315: 3309: 3308: 3306: 3305: 3300: 3295: 3294: 3293: 3291:Model 425/425C 3288: 3283: 3278: 3273: 3263: 3262: 3261: 3256: 3248: 3242: 3240: 3231: 3227: 3226: 3224: 3223: 3222: 3221: 3216: 3209:PS/2 portables 3206: 3201: 3196: 3190: 3188: 3184: 3183: 3180: 3179: 3177: 3176: 3175: 3174: 3169: 3159: 3154: 3149: 3144: 3139: 3134: 3129: 3124: 3119: 3114: 3113: 3112: 3107: 3102: 3097: 3092: 3087: 3082: 3077: 3072: 3067: 3062: 3057: 3052: 3047: 3042: 3037: 3035:list of models 3027: 3022: 3016: 3014: 3010: 3009: 3007: 3006: 3005: 3004: 2999: 2989: 2984: 2979: 2978: 2977: 2972: 2967: 2957: 2956: 2955: 2953:list of models 2945: 2940: 2934: 2932: 2925: 2924:and all-in-one 2919: 2918: 2916: 2915: 2908: 2900: 2897: 2896: 2888: 2887: 2880: 2873: 2865: 2859: 2858: 2853: 2844: 2843: 2836: 2835:External links 2833: 2831: 2830: 2822: 2821: 2820: 2814: 2813: 2802: 2777: 2747: 2733:David Thomas, 2726: 2714: 2702: 2690: 2678: 2675:. May 8, 2020. 2664: 2638: 2608: 2583: 2556: 2529: 2502: 2470: 2436: 2415: 2381: 2347: 2307: 2277: 2247: 2240: 2215: 2192: 2138: 2109: 2093: 2081: 2072: 2058: 2051: 2026: 2017: 1992: 1955: 1928: 1911: 1888: 1863: 1844: 1826: 1825: 1823: 1820: 1819: 1818: 1813: 1806: 1803: 1800: 1799: 1795: 1794: 1758: 1755: 1754: 1752: 1751: 1744: 1737: 1729: 1722: 1719: 1703:Eagle Computer 1682: 1679: 1674: 1671: 1668: 1667: 1665: 1662: 1659: 1656: 1653: 1650: 1647: 1642: 1639: 1636: 1630: 1625: 1623:September 1986 1620: 1617: 1613: 1612: 1610: 1608: 1605: 1602: 1599: 1596: 1593: 1588: 1585: 1582: 1576: 1571: 1566: 1563: 1557: 1556: 1554: 1552: 1549: 1546: 1543: 1540: 1537: 1532: 1529: 1526: 1520: 1515: 1510: 1507: 1501: 1500: 1498: 1496: 1493: 1490: 1487: 1484: 1481: 1476: 1473: 1470: 1464: 1459: 1454: 1451: 1445: 1444: 1442: 1439: 1436: 1433: 1430: 1427: 1424: 1419: 1416: 1413: 1407: 1402: 1397: 1394: 1388: 1387: 1385: 1382: 1379: 1376: 1373: 1370: 1367: 1362: 1359: 1356: 1350: 1345: 1340: 1337: 1331: 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709: 706: 703: 698: 695: 692: 686: 681: 676: 673: 669: 668: 665: 662: 657: 652: 645: 638: 629: 626: 618: 610: 607: 604: 601: 595: 579: 576: 531: 525: 524: 522: 519: 449: 446: 426:floating point 388: 387:Other features 385: 373: 372:Expansion unit 370: 360: 357: 353: 352: 345: 339: 328: 325: 322: 313: 310: 297: 294: 272: 271: 266: 262: 261: 259: 258: 252: 245: 243: 239: 238: 233: 229: 228: 225: 221: 220: 213: 209: 208: 205: 201: 200: 190: 186: 185: 176: 172: 171: 168: 164: 163: 160: 156: 155: 149: 143: 142: 122: 116: 115: 105: 101: 100: 87: 83: 82: 77: 73: 72: 67: 63: 62: 59: 53: 52: 44: 43: 26: 9: 6: 4: 3: 2: 4122: 4111: 4108: 4106: 4103: 4101: 4098: 4097: 4095: 4080: 4077: 4075: 4072: 4070: 4067: 4065: 4062: 4060: 4057: 4055: 4054:Micro Channel 4052: 4048: 4045: 4043: 4040: 4039: 4038: 4035: 4033: 4030: 4028: 4025: 4023: 4020: 4018: 4015: 4013: 4010: 4009: 4007: 4003: 3997: 3994: 3992: 3989: 3987: 3984: 3982: 3979: 3977: 3974: 3972: 3969: 3967: 3964: 3962: 3959: 3958: 3956: 3952: 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3478: 3473: 3467: 3464: 3463: 3461: 3458: 3453: 3447: 3444: 3442: 3439: 3437: 3434: 3432: 3429: 3427: 3424: 3423: 3421: 3418: 3413: 3407: 3404: 3402: 3399: 3397: 3394: 3392: 3389: 3387: 3384: 3382: 3379: 3377: 3374: 3373: 3371: 3368: 3363: 3357: 3354: 3352: 3349: 3347: 3344: 3342: 3339: 3338: 3336: 3333: 3328: 3325: 3324: 3319: 3316: 3314: 3310: 3304: 3301: 3299: 3296: 3292: 3289: 3287: 3284: 3282: 3279: 3277: 3274: 3272: 3269: 3268: 3267: 3264: 3260: 3257: 3255: 3252: 3251: 3249: 3247: 3244: 3243: 3241: 3237: 3232: 3228: 3220: 3217: 3215: 3212: 3211: 3210: 3207: 3205: 3202: 3200: 3197: 3195: 3192: 3191: 3189: 3185: 3173: 3170: 3168: 3165: 3164: 3163: 3160: 3158: 3155: 3153: 3150: 3148: 3145: 3143: 3140: 3138: 3135: 3133: 3130: 3128: 3125: 3123: 3120: 3118: 3115: 3111: 3108: 3106: 3103: 3101: 3098: 3096: 3093: 3091: 3088: 3086: 3083: 3081: 3078: 3076: 3073: 3071: 3068: 3066: 3063: 3061: 3058: 3056: 3053: 3051: 3048: 3046: 3043: 3041: 3038: 3036: 3033: 3032: 3031: 3028: 3026: 3023: 3021: 3018: 3017: 3015: 3011: 3003: 3000: 2998: 2995: 2994: 2993: 2990: 2988: 2985: 2983: 2980: 2976: 2973: 2971: 2968: 2966: 2963: 2962: 2961: 2958: 2954: 2951: 2950: 2949: 2946: 2944: 2941: 2939: 2936: 2935: 2933: 2931:Single models 2929: 2926: 2920: 2913: 2909: 2906: 2902: 2901: 2898: 2893: 2886: 2881: 2879: 2874: 2872: 2867: 2866: 2863: 2857: 2854: 2852: 2849: 2848: 2847: 2842: 2839: 2838: 2828: 2824: 2823: 2818: 2817: 2811: 2806: 2791: 2787: 2781: 2766:. p. 307 2765: 2761: 2757: 2751: 2744: 2743:0-919493-16-5 2740: 2736: 2730: 2723: 2718: 2711: 2706: 2699: 2694: 2687: 2682: 2674: 2668: 2652: 2648: 2642: 2626: 2622: 2618: 2612: 2597: 2593: 2587: 2571: 2567: 2560: 2552: 2548: 2544: 2540: 2533: 2525: 2521: 2517: 2511: 2509: 2507: 2498: 2494: 2493:Computerworld 2490: 2483: 2481: 2479: 2477: 2475: 2466: 2462: 2458: 2454: 2447: 2445: 2443: 2441: 2432: 2425: 2419: 2411: 2407: 2403: 2396: 2394: 2392: 2390: 2388: 2386: 2378: 2373: 2369: 2365: 2361: 2354: 2352: 2344: 2339: 2335: 2331: 2324: 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Model 286 1615: 1614: 1611: 1609: 1606: 1603: 1600: 1597: 1594: 1592: 1589: 1586: 1583: 1580: 1577: 1572: 1567: 1564: 1562: 1559: 1558: 1555: 1553: 1550: 1547: 1544: 1541: 1538: 1536: 1533: 1530: 1527: 1524: 1521: 1516: 1511: 1508: 1506: 1503: 1502: 1499: 1497: 1494: 1491: 1488: 1485: 1482: 1480: 1477: 1474: 1471: 1468: 1465: 1460: 1455: 1452: 1450: 1447: 1446: 1443: 1440: 1437: 1434: 1431: 1428: 1425: 1423: 1420: 1417: 1414: 1411: 1408: 1403: 1398: 1395: 1393: 1390: 1389: 1386: 1383: 1380: 1377: 1374: 1371: 1368: 1366: 1363: 1360: 1357: 1354: 1351: 1346: 1341: 1338: 1336: 1333: 1332: 1329: 1326: 1323: 1320: 1317: 1314: 1311: 1309: 1306: 1303: 1300: 1297: 1294: 1289: 1284: 1281: 1279: 1276: 1275: 1272: 1269: 1266: 1263: 1260: 1257: 1254: 1252: 1249: 1246: 1243: 1240: 1237: 1232: 1229: 1226: 1224: 1221: 1220: 1217: 1214: 1211: 1208: 1205: 1202: 1199: 1197: 1194: 1191: 1188: 1185: 1182: 1177: 1172: 1169: 1166: 1165: 1162: 1159: 1156: 1153: 1150: 1147: 1144: 1142: 1139: 1136: 1133: 1130: 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512: 508: 504: 499: 497: 492: 489: 486: 483: 481: 477: 472: 470: 469:3270 terminal 466: 461: 454: 445: 442: 437: 435: 431: 427: 424: 419: 415: 413: 409: 405: 400: 396: 394: 384: 381: 378: 369: 365: 356: 350: 346: 343: 340: 337: 333: 329: 326: 323: 320: 319: 318: 309: 307: 303: 293: 291: 287: 283: 279: 270: 267: 263: 256: 253: 250: 247: 246: 244: 240: 237: 234: 230: 226: 222: 214: 210: 206: 202: 198: 194: 191: 187: 184: 180: 177: 173: 169: 165: 161: 157: 153: 150: 148: 144: 141: 138: 134: 130: 126: 123: 121: 117: 106: 102: 88: 84: 81: 78: 74: 71: 68: 64: 60: 57:Also known as 54: 50: 45: 41: 36: 30: 19: 3526:Power Series 3476: 3456: 3416: 3366: 3331: 3250:PS/2 Laptop 3239:pre-ThinkPad 2959: 2845: 2826: 2825:IBM (1983). 2805: 2794:, retrieved 2789: 2780: 2768:. 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299: 281: 277: 275: 251:(next model) 104:Discontinued 86:Release date 66:Manufacturer 29: 3246:Convertible 3204:Portable PC 3162:ThinkCentre 2745:pp. 172-179 2206:PC Magazine 2105:PC Magazine 1983:|last= 1661:20 MB 1645:Intel 80286 1607:10 MB 1551:10 MB 1438:10 MB 992:20 MB 937:20 MB 772:10 MB 717:10 MB 543:Intel 80286 430:coprocessor 428:arithmetic 393:floppy disk 344:is included 304:" or just " 232:Predecessor 207:120/240 VAC 131:2.0-3.20 / 4094:Categories 4079:ThinkLight 3923:Prototypes 3298:PS/55 Note 3137:ValuePoint 2943:DataMaster 1822:References 1591:Intel 8088 1574:April 1987 1535:Intel 8088 1518:April 1987 1479:Intel 8088 1462:April 1987 1422:Intel 8088 1365:Intel 8088 1308:Intel 8088 1251:Intel 8088 1196:Intel 8088 1174:April 1986 1141:Intel 8088 1119:April 1986 1086:Intel 8088 1064:April 1986 1031:Intel 8088 1009:April 1986 976:Intel 8088 954:April 1986 921:Intel 8088 899:April 1986 866:Intel 8088 844:April 1985 811:Intel 8088 789:April 1985 756:Intel 8088 701:Intel 8088 679:March 1983 628:Processor 582:See also: 551:wait state 507:System/370 423:Intel 8087 342:PC DOS 2.0 334:featuring 290:hard drive 212:Dimensions 193:PC speaker 152:Intel 8088 96:1983-03-08 4037:Keyboards 4017:IBM BASIC 3869:TransNote 3147:PC Series 2790:InfoWorld 2187:Bitsavers 2133:0199-6649 2120:InfoWorld 1975:cite book 1966:InfoWorld 1942:InfoWorld 1673:Reception 1635:, 16-bit 1619:5162-286 1565:5160-589 1509:5160-588 1453:5160-568 1405:July 1987 1396:5271-006 1348:July 1987 1339:5271-004 1291:July 1987 1282:5271-002 1234:July 1987 1230:Un­known 1227:5271-000 1179:June 1987 1170:5160-278 1124:June 1987 1115:5160-277 1069:June 1987 1060:5160-268 1014:June 1987 1005:5160-267 959:June 1987 950:5160-089 904:June 1987 895:5160-088 849:June 1987 840:5160-078 794:June 1987 785:5160-068 739:June 1987 734:June 1984 730:5160-086 684:June 1984 675:5160-087 404:IBM BASIC 349:5-pin DIN 242:Successor 199:-capable) 125:IBM BASIC 18:IBM PC/XT 4074:UltraBay 4012:IBM 5151 3991:IBM 8514 3945:WatchPad 3930:Leapfrog 3895:Handheld 3805:R series 3727:X series 3681:A series 3613:T series 3585:G series 3313:ThinkPad 3187:Portable 3172:M series 3167:A series 3157:NetVista 3132:EduQuest 1948:July 22, 1805:See also 1721:Timeline 1711:Olivetti 1699:Hyperion 1581:, 8-bit 1525:, 8-bit 1469:, 8-bit 1412:, 8-bit 1355:, 8-bit 1298:, 8-bit 1241:, 8-bit 1186:, 8-bit 1131:, 8-bit 1076:, 8-bit 1021:, 8-bit 966:, 8-bit 911:, 8-bit 856:, 8-bit 801:, 8-bit 746:, 8-bit 691:, 8-bit 667:Ref(s). 515:IBM 4950 511:Series/1 312:Features 306:eXTended 175:Graphics 4069:SurePOS 4047:Model M 4042:Model F 4005:Related 3907:WorkPad 3303:PCradio 3259:CL57 SX 3002:3270 AT 2970:3270 PC 2922:Desktop 2796:May 14, 2770:May 14, 2657:May 14, 2631:May 14, 2601:May 14, 2576:May 14, 2457:PC Week 2406:PC Week 2334:PC Week 1664:  1392:3270 PC 1335:3270 PC 1278:3270 PC 1223:3270 PC 885:  830:  775:  720:  521:XT 286 465:3270 PC 265:Related 167:Storage 111:1987-04 109: ( 94: ( 3862:Others 3479:series 3459:series 3419:series 3369:series 3334:series 3286:N51SLC 3254:L40 SX 3230:Laptop 3152:Aptiva 3100:70 486 3095:70 386 3060:30 286 3045:25 286 3013:Series 2997:AT/370 2975:XT 286 2965:XT/370 2856:XT 286 2741:  2551:et seq 2465:et seq 2372:et seq 2238:  2131:  2049:  1707:Corona 1697:, the 1561:XT/370 1505:XT/370 1449:XT/370 664:Notes 617:slots 547:IBM AT 539:XT 286 503:XT/370 159:Memory 129:PC DOS 4064:Mwave 3436:555BJ 3431:550BJ 3281:N51SX 3276:N45SL 3271:N33SX 3142:Ambra 3117:PS/55 3090:65 SX 3080:55 LS 3075:55 SX 3050:25 SX 2992:PC AT 2960:PC XT 2819:Notes 2427:(PDF) 2183:(PDF) 1902:Wired 1858:(PDF) 1595:4.77 1539:4.77 1495:none 1483:4.77 1426:4.77 1381:none 1369:4.77 1324:none 1312:4.77 1267:none 1255:4.77 1212:none 1200:4.77 1157:none 1145:4.77 1102:none 1090:4.77 1047:none 1035:4.77 980:4.77 925:4.77 882:none 870:4.77 827:none 815:4.77 760:4.77 705:4.77 636:(MHz) 633:speed 631:Clock 625:bays 594:Type 553:RAM. 336:Xebec 282:PC/XT 204:Power 189:Sound 140:Xenix 133:PC/IX 3795:X61t 3790:X60t 3718:A31p 3715:A30p 3706:A22p 3703:A21p 3700:A20p 3697:A22e 3694:A22m 3691:A21m 3688:A20m 3199:5110 3194:5100 3127:PS/1 3122:PS/V 3070:50 Z 3030:PS/2 3020:5550 2987:PCjr 2938:5120 2798:2021 2772:2021 2764:BYTE 2739:ISBN 2659:2021 2633:2021 2603:2021 2578:2021 2570:BYTE 2236:ISBN 2129:ISSN 2047:ISBN 2012:Byte 1987:help 1950:2014 1883:Byte 1685:The 650:(KB) 643:(KB) 609:Bus 597:IBM 478:and 463:The 439:The 412:POST 347:The 296:Name 276:The 224:Mass 76:Type 3912:Z50 3853:R61 3848:R60 3843:R52 3838:R51 3833:R50 3828:R40 3823:R32 3818:R31 3813:R30 3785:X60 3780:X41 3775:X40 3770:X32 3765:X31 3760:X30 3755:X24 3750:X23 3745:X22 3740:X21 3735:X20 3712:A31 3709:A30 3671:T61 3666:T60 3661:T43 3656:T42 3651:T41 3646:T40 3641:T30 3636:T23 3631:T22 3626:T21 3621:T20 3603:G50 3598:G41 3593:G40 3569:860 3564:851 3559:850 3554:823 3549:822 3544:821 3539:820 3534:800 3516:770 3511:765 3506:760 3501:755 3496:750 3486:700 3466:600 3446:570 3441:560 3426:500 3406:390 3401:380 3396:365 3391:360 3386:350 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Index

IBM PC/XT


IBM
Personal computer
Operating system
IBM BASIC
PC DOS
PC/IX
SCO
Xenix
CPU
Intel 8088
MDA
CGA
PC speaker
PWM
IBM Personal Computer
IBM Personal Computer AT
IBM PS/2 Model 30
List of IBM Personal Computer models
IBM Personal Computer
hard drive
disk controller
Xebec
PC DOS 2.0
5-pin DIN
floppy disk
IBM BASIC
ROM

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