IBM 729 Magnetic Tape Unit

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:magnetic_tape_data_storage_device
gptkbp:countryOfOrigin	gptkb:United_States
gptkbp:displayedAt	gptkb:Computer_History_Museum gptkb:National_Museum_of_American_History
gptkbp:encodes	gptkb:NRZI gptkb:PE_(Phase_Encoding)
gptkbp:introduced	1958
gptkbp:manufacturer	gptkb:IBM
gptkbp:maxTapeLength	2400 feet
gptkbp:mediaType	magnetic tape
gptkbp:notableFeature	automatic threading vacuum column tape handling write protection ring
gptkbp:numberOfTracks	7
gptkbp:predecessor	gptkb:IBM_727_Magnetic_Tape_Unit
gptkbp:recordingDensity	200 characters per inch 556 characters per inch 800 characters per inch
gptkbp:speed	75 inches per second
gptkbp:status	obsolete
gptkbp:successor	gptkb:IBM_2400_Series_Magnetic_Tape_Units
gptkbp:usedFor	gptkb:IBM_1400_series_computers gptkb:IBM_700_series_computers data transfer data storage data backup
gptkbp:weight	approximately 800 pounds
gptkbp:width	0.5 inch
gptkbp:bfsParent	gptkb:IBM_1401 gptkb:IBM_1401_Data_Processing_System
gptkbp:bfsLayer	5
https://www.w3.org/2000/01/rdf-schema#label	IBM 729 Magnetic Tape Unit