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- IBM_727 abstract "The IBM 727 Magnetic Tape Unit was announced for the IBM 701 and IBM 702 on September 25, 1953. It became IBM's standard tape drive for their early vacuum tube era computer systems. Later vacuum tube machines and first-generation transistor computers used the IBM 729-series tape drive. The 727 was withdrawn on May 12, 1971.The tape had seven parallel tracks, six for data and one to maintain parity. Tapes with character data (BCD) were recorded in even parity. Binary tapes used odd parity. Aluminum strips were glued several feet from the ends of the tape to serve as logical beginning and end of tape markers. Write protection was provided by a removable plastic ring in the back of the tape reel.".
- IBM_727 thumbnail IBM_704_mainframe.gif?width=300.
- IBM_727 wikiPageExternalLink 701_1415bx27.html.
- IBM_727 wikiPageID "6038256".
- IBM_727 wikiPageRevisionID "592797935".
- IBM_727 hasPhotoCollection IBM_727.
- IBM_727 subject 7000_series.
- IBM_727 subject Category:IBM_storage_devices.
- IBM_727 comment "The IBM 727 Magnetic Tape Unit was announced for the IBM 701 and IBM 702 on September 25, 1953. It became IBM's standard tape drive for their early vacuum tube era computer systems. Later vacuum tube machines and first-generation transistor computers used the IBM 729-series tape drive. The 727 was withdrawn on May 12, 1971.The tape had seven parallel tracks, six for data and one to maintain parity. Tapes with character data (BCD) were recorded in even parity. Binary tapes used odd parity.".
- IBM_727 label "IBM 727".
- IBM_727 label "IBM 727".
- IBM_727 sameAs IBM_727.
- IBM_727 sameAs m.0flwr_.
- IBM_727 sameAs Q3302609.
- IBM_727 sameAs Q3302609.
- IBM_727 wasDerivedFrom IBM_727?oldid=592797935.
- IBM_727 depiction IBM_704_mainframe.gif.
- IBM_727 isPrimaryTopicOf IBM_727.
