A bank of IBM 729 tape drivesReel of tape showing beginning-of-tape reflective markerAn IBM 729 tape drive being debugged as part of the Computer History Museum's IBM 1401 restoration project. A reel of magnetic tape is being loaded onto the drive. The operator's finger is holding the tape in place on the take-up reel as he takes a few turns to secure the tape leader. An IBM 1403 line printer is in the foreground.
The IBM 729 Magnetic Tape Unit was IBM's iconic tape mass storage system from the late 1950s through the mid-1960s. Part of the IBM 7-track family of tape units, it was used on late 700, most 7000 and many 1400 series computers. Like its predecessor, the IBM 727 and many successors, the 729 used 1⁄2 inch (13 mm) magnetic tape up to 2,400 feet (730 m) long wound on reels up to 10+1⁄2 inches (270 mm) diameter. To allow rapid tape acceleration (and thus reduced seek/access times), long vacuum columns were placed between the tape reels and the read/write heads to absorb sudden increases in tape tension which would otherwise break the tape. Write protection was provided by a removable plastic ring in the back of the tape reel.
The IBM729 Magnetic Tape Unit was IBM's iconic tape mass storage system from the late 1950s through the mid-1960s. Part of the IBM 7-track family of...
series UNIVAC 1107 9PAC Early IBM disk storage IBM 701 IBM 704 IBM 709 IBM 711 card reader IBM 716 line printer IBM729 tape drive SHARE and IBSYS operating...
units attached to an IBM 7604 Tape Control via an IBM 7605 RAMAC Control, 40 729 models II and IV tape drives attached to an IBM 7604 Tape Control, and...
IBM 721: IBM 7090/IBM 7094 Card Punch IBM729: IBM 7090/IBM 7094 Magnetic tape Unit IBM 1301: IBM 7090/IBM 7094 Disk Storage IBM 1302: IBM 7090/IBM 7094...
History Museum in Mountain View, California has working IBM729 tape drives attached to its working IBM 1401 system. Mellor, Chris (2005-03-02). "Mainframe...
IBM 1404, IBM 1443, IBM 1445 7-track tape drives: IBM729, IBM 7330, IBM 7335 Disk drives: IBM 1301, IBM 1311, IBM 1405 RAMAC Check processing IBM 1210...
The IBM 1401 is a variable-wordlength decimal computer that was announced by IBM on October 5, 1959. The first member of the highly successful IBM 1400...
attached to a 709, each able to control up to 20 IBM729 tape drives and an IBM 716 alphanumeric line printer, IBM 711 card-reader and 721 card punch. This allows...
input/output with the IBM 7502 card reader, line printers and the IBM 727 magnetic tape drives, to be used on the 7080. Second generation IBM729 magnetic tape...
vacuum-tube machines and first-generation transistor computers used the IBM729-series tape drive. The 727 was withdrawn on May 12, 1971. The tape had...
to be compatible with the IBM729 series tape drives which set the industry standard for data interchange. Ironically, IBM then later switched to phase...
mathematician, Thornton Fry, to create new computational methods. Froelich studied IBM tabulating equipment and desk calculating machines to see if she could adapt...
third generation 32-bit PowerPC microprocessors designed and manufactured by IBM and Motorola (spun off as Freescale Semiconductor bought by NXP Semiconductors)...
with 512 kB L2 cache announced by IBM in 2001 and available early 2002 at 1 GHz 750GX with 1 MB L2 cache introduced by IBM in 2003 970 (2003), 64-bit, derived...
Folio) is an IBM PC-compatible palmtop PC, released by Atari Corporation in June 1989. It was the first palmtop computer compatible with the IBM PC ever released...
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