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- Q4032660 subject Q15631660.
- Q4032660 subject Q8529937.
- Q4032660 subject Q8831183.
- Q4032660 abstract "The IBM System/360, released in 1964, introduced what is now generally known as 9 track tape. The ½ inch (12.7 mm) wide magnetic tape media and reels are the same size as the earlier IBM 7 track format it replaced, but the new format has eight data tracks and one parity track for a total of nine parallel tracks. Data is stored as 8-bit characters, spanning the full width of the tape (including the parity bit). Various recording methods were employed during its lifetime as tape speed and data density increased, including PE (phase encoding), GCR (group code recording) and NRZI (non-return-to-zero, inverted, sometimes pronounced "nur-zee"). Tapes came in various sizes up to 3,600 feet (1,100 m) in length.The standard size of a byte was effectively set at eight bits with the S/360 and nine-track tape.For over 30 years the format dominated offline storage and data transfer, but by the end of the 20th century it was obsolete, and the last manufacturer of tapes ceased production in early 2002, with drive production ending the next year.".
- Q4032660 thumbnail IBM_System_360_tape_drives.jpg?width=300.
- Q4032660 wikiPageExternalLink ai_6795077.
- Q4032660 wikiPageExternalLink cipher.
- Q4032660 wikiPageExternalLink EK-OTA79-TM-001_Mar88.pdf.
- Q4032660 wikiPageExternalLink EK-OTS11-TM-003_TS11techMan.pdf.
- Q4032660 wikiPageExternalLink EK-0TU80-SV.004_Jun84.pdf.
- Q4032660 wikiPageExternalLink EK-TUA81-TM_002_Nov85.pdf.
- Q4032660 wikiPageExternalLink B03P-5325-0100A_244X_Jun87.pdf.
- Q4032660 wikiPageExternalLink 7970_MaintCourseHandouts.pdf.
- Q4032660 wikiPageExternalLink GA22-6866-5_2400-Series_CompDescr_Jul71.pdf.
- Q4032660 wikiPageExternalLink Kennedy_TapeModels.txt.
- Q4032660 wikiPageExternalLink m4data.
- Q4032660 wikiPageExternalLink UP-3407r1_UniservoIIIA_Tech.pdf.
- Q4032660 wikiPageExternalLink UT-3408r1_UniservoIIIC.pdf.
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- Q4032660 wikiPageExternalLink IBM9348.html.
- Q4032660 wikiPageExternalLink storage_3420.html.
- Q4032660 wikiPageExternalLink tapes.html.
- Q4032660 wikiPageExternalLink 9906_brochure.pdf.
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- Q4032660 comment "The IBM System/360, released in 1964, introduced what is now generally known as 9 track tape. The ½ inch (12.7 mm) wide magnetic tape media and reels are the same size as the earlier IBM 7 track format it replaced, but the new format has eight data tracks and one parity track for a total of nine parallel tracks. Data is stored as 8-bit characters, spanning the full width of the tape (including the parity bit).".
- Q4032660 label "9 track tape".
- Q4032660 depiction IBM_System_360_tape_drives.jpg.