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IBM 726

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and announced on May 21, 1952. This model of tape unit was shipped with the IBM 701 from December 20, 1952 until February 28, 1955. Unlike later IBM 7 track drives, the 726 could read backwards as well as forwards.
222: 680: 193: 737: 215: 48:. Tapes were recorded in odd parity, to ensure at least one bit transition per copy group as well as for error checking. 208: 673: 766: 730: 529: 271: 771: 666: 761: 756: 723: 447: 383: 231: 25: 600: 571: 406: 559: 536: 354: 336: 330: 482: 400: 181: 623: 435: 8: 565: 500: 453: 377: 318: 158: 646: 465: 200: 159:"UniRecovery Fifty years of IBM innovation with information storage on magnetic tape" 703: 342: 300: 51:
The 726 concurrently handled two reels of tape, and there were two 726 units in an
711: 654: 312: 707: 650: 750: 494: 488: 412: 459: 306: 294: 37: 28:. It was a dual magnetic tape reader/recorder developed for use with the 45: 594: 259: 348: 324: 288: 253: 265: 52: 29: 695: 371: 588: 553: 441: 429: 606: 21: 230: 182:
Innovations in the Design of Magnetic Tape Subsystems
156: 748: 731: 674: 216: 157:Bradshaw, R.; Schroeder, C. (June 10, 2003). 738: 724: 681: 667: 223: 209: 44:, not a character) and one to maintain 749: 204: 194:IBM 726 Magnetic tape reader/recorder 690: 640: 13: 14: 783: 96:1 Inch - 100 chars - 16.67 words 694: 423:"Eighth" (0.15) inch (3.81 mm) 187: 175: 150: 1: 436:KC standard, Compact Cassette 144: 710:. You can help Knowledge by 653:. You can help Knowledge by 7: 10: 788: 689: 639: 522:Three quarter inch (19 mm) 448:Tarbell Cassette Interface 232:Magnetic-tape data storage 617:Four millimeter (3.81 mm) 616: 581: 546: 521: 514: 475: 422: 393: 364: 281: 246: 239: 40:, six for data (called a 767:Mainframe computer stubs 582:Eight millimeter (8 mm) 365:Eight millimeter (8 mm) 138:Cellulose acetate base 772:Computer storage stubs 706:-related article is a 649:-related article is a 483:Exatron Stringy Floppy 394:Quarter inch (6.35 mm) 476:Stringy (1.58–1.9 mm) 88:7500 copy groups/sec 72:100 copy groups/inch 38:seven parallel tracks 762:IBM 700/7000 series 757:IBM storage devices 547:Half inch (12.7 mm) 501:Rotronics Wafadrive 454:Commodore Datasette 282:Half inch (12.7 mm) 163:www.unirecovery.com 647:mainframe computer 93:End of record gap 26:magnetic tape unit 719: 718: 662: 661: 637: 636: 633: 632: 510: 509: 247:Wide (19–25.4 mm) 142: 141: 69:Copy groups/inch 64:6 Data, 1 parity 779: 740: 733: 726: 704:computer-storage 698: 691: 683: 676: 669: 641: 519: 518: 301:TX-2 Tape System 244: 243: 225: 218: 211: 202: 201: 196: 191: 185: 179: 173: 172: 170: 169: 154: 130: 58: 57: 787: 786: 782: 781: 780: 778: 777: 776: 747: 746: 745: 744: 688: 687: 638: 629: 612: 577: 542: 506: 471: 466:IBM PC Cassette 418: 389: 360: 277: 235: 229: 199: 192: 188: 180: 176: 167: 165: 155: 151: 147: 128: 125:Length of reel 12: 11: 5: 785: 775: 774: 769: 764: 759: 743: 742: 735: 728: 720: 717: 716: 699: 686: 685: 678: 671: 663: 660: 659: 635: 634: 631: 630: 628: 627: 620: 618: 614: 613: 611: 610: 604: 598: 592: 585: 583: 579: 578: 576: 575: 569: 563: 557: 550: 548: 544: 543: 541: 540: 533: 525: 523: 516: 512: 511: 508: 507: 505: 504: 498: 492: 486: 479: 477: 473: 472: 470: 469: 463: 457: 451: 445: 439: 433: 426: 424: 420: 419: 417: 416: 410: 404: 397: 395: 391: 390: 388: 387: 381: 375: 368: 366: 362: 361: 359: 358: 352: 346: 340: 334: 328: 322: 316: 310: 304: 298: 292: 285: 283: 279: 278: 276: 275: 269: 263: 257: 250: 248: 241: 237: 236: 228: 227: 220: 213: 205: 198: 197: 186: 174: 148: 146: 143: 140: 139: 136: 132: 131: 126: 122: 121: 118: 117:Width of tape 114: 113: 110: 106: 105: 102: 98: 97: 94: 90: 89: 86: 85:Transfer rate 82: 81: 80:75 Inches/sec 78: 74: 73: 70: 66: 65: 62: 9: 6: 4: 3: 2: 784: 773: 770: 768: 765: 763: 760: 758: 755: 754: 752: 741: 736: 734: 729: 727: 722: 721: 715: 713: 709: 705: 700: 697: 693: 692: 684: 679: 677: 672: 670: 665: 664: 658: 656: 652: 648: 643: 642: 625: 622: 621: 619: 615: 608: 605: 602: 599: 596: 593: 590: 587: 586: 584: 580: 573: 570: 567: 564: 561: 558: 555: 552: 551: 549: 545: 538: 534: 531: 527: 526: 524: 520: 517: 513: 502: 499: 496: 495:QL Microdrive 493: 490: 489:ZX Microdrive 487: 484: 481: 480: 478: 474: 467: 464: 461: 458: 455: 452: 449: 446: 443: 440: 437: 434: 431: 428: 427: 425: 421: 414: 411: 408: 405: 402: 399: 398: 396: 392: 385: 382: 379: 376: 373: 370: 369: 367: 363: 356: 353: 350: 347: 344: 341: 338: 335: 332: 329: 326: 323: 320: 317: 314: 311: 308: 305: 302: 299: 296: 293: 290: 287: 286: 284: 280: 273: 270: 267: 264: 261: 258: 255: 252: 251: 249: 245: 242: 238: 233: 226: 221: 219: 214: 212: 207: 206: 203: 195: 190: 183: 178: 164: 160: 153: 149: 137: 134: 133: 127: 124: 123: 119: 116: 115: 111: 108: 107: 103: 100: 99: 95: 92: 91: 87: 84: 83: 79: 76: 75: 71: 68: 67: 63: 60: 59: 56: 54: 49: 47: 43: 39: 36:The tape had 34: 31: 27: 23: 19: 712:expanding it 701: 655:expanding it 644: 560:Redwood SD-3 189: 177: 166:. Retrieved 162: 152: 135:Composition 50: 41: 35: 17: 15: 378:IBM 3570 MP 343:LTO Ultrium 295:IBM 7-track 101:Start time 77:Tape speed 751:Categories 460:DECtape II 168:2019-07-13 145:References 129:1 200 feet 109:Stop time 42:copy group 120:1/2 inch 55:system. 24:'s first 349:IBM 3592 325:IBM 3590 313:IBM 3480 289:UNISERVO 260:LINCtape 254:IBM 7340 624:DDS/DAT 595:Mammoth 515:Helical 307:9-track 272:CDC 626 266:DECtape 234:formats 61:Tracks 53:IBM 701 30:IBM 701 18:IBM 726 626:(1989) 609:(1999) 603:(1996) 597:(1994) 591:(1987) 574:(2003) 568:(19xx) 562:(1995) 556:(1992) 539:(1992) 535:Ampex 532:(19xx) 503:(1984) 497:(1984) 491:(1983) 485:(1979) 468:(1981) 462:(1979) 456:(1977) 450:(1976) 444:(1976) 438:(1975) 432:(1971) 415:(1992) 409:(1986) 403:(1972) 386:(1999) 380:(1997) 374:(1995) 372:Travan 357:(2006) 355:T10000 351:(2003) 345:(2000) 339:(2000) 333:(1998) 327:(1995) 321:(1984) 315:(1984) 309:(1964) 303:(1958) 297:(1952) 291:(1951) 274:(1966) 268:(1963) 262:(1962) 256:(1961) 240:Linear 112:10 ms 104:10 ms 46:parity 702:This 645:This 589:Data8 554:ArVid 528:Sony 442:DC100 430:D/CAS 413:Ditto 337:T9940 331:T9840 184:(PDF) 708:stub 651:stub 572:SAIT 20:was 16:The 607:VXA 601:AIT 566:DTF 537:DST 530:DIR 407:SLR 401:QIC 384:ADR 319:DLT 22:IBM 753:: 161:. 739:e 732:t 725:v 714:. 682:e 675:t 668:v 657:. 224:e 217:t 210:v 171:.

Index

IBM
magnetic tape unit
IBM 701
seven parallel tracks
parity
IBM 701
"UniRecovery Fifty years of IBM innovation with information storage on magnetic tape"
Innovations in the Design of Magnetic Tape Subsystems
IBM 726 Magnetic tape reader/recorder
v
t
e
Magnetic-tape data storage
IBM 7340
LINCtape
DECtape
CDC 626
UNISERVO
IBM 7-track
TX-2 Tape System
9-track
IBM 3480
DLT
IBM 3590
T9840
T9940
LTO Ultrium
IBM 3592
T10000
Travan

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