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gptkbp:instanceOf
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magnetic tape data storage device
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gptkbp:dataRate
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up to 112.5 kbit/s
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gptkbp:encodes
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gptkb:NRZI
PE (Phase Encoding) in later models
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gptkbp:height
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about 5 feet
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https://www.w3.org/2000/01/rdf-schema#label
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IBM 729 tape drive
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gptkbp:introduced
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1958
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gptkbp:length
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about 5 feet
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gptkbp:manufacturer
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gptkb:IBM
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gptkbp:marketedAs
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gptkb:IBM_729_Magnetic_Tape_Unit
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gptkbp:mediaType
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half-inch magnetic tape
up to 2400 feet of tape
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gptkbp:notableFeature
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automatic load and unload
vacuum column tape handling
write protection ring
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gptkbp:numberOfTracks
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7
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gptkbp:powerSource
|
about 1 kW
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gptkbp:predecessor
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gptkb:IBM_727_tape_drive
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gptkbp:recordingMethod
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7-track
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gptkbp:status
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obsolete
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gptkbp:storage
|
up to 100,000 characters per tape
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gptkbp:successor
|
gptkb:IBM_2400_series_tape_drives
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gptkbp:usedFor
|
gptkb:IBM_1400_series_computers
gptkb:IBM_700_series_computers
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gptkbp:usedIn
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scientific computing
business data processing
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gptkbp:weight
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about 800 pounds
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gptkbp:width
|
0.5 inch
about 2 feet
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gptkbp:writeSpeed
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75 inches per second
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gptkbp:bfsParent
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gptkb:IBM_7090
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gptkbp:bfsLayer
|
5
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