gptkbp:instanceOf
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electromechanical computer
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gptkbp:alsoKnownAs
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gptkb:IBM_Automatic_Sequence_Controlled_Calculator
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gptkbp:countryOfOrigin
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gptkb:United_States
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gptkbp:designer
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gptkb:Howard_H._Aiken
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gptkbp:fundedBy
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gptkb:U.S._Navy
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gptkbp:height
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2.4 meters
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https://www.w3.org/2000/01/rdf-schema#label
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Harvard Mark I computer
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gptkbp:input
|
punched paper tape
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gptkbp:length
|
15.5 meters
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gptkbp:location
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gptkb:Harvard_University
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gptkbp:manufacturer
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gptkb:IBM
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gptkbp:notableUser
|
gptkb:Grace_Hopper
gptkb:Francis_E._Hamilton
gptkb:Robert_V._D._Campbell
gptkb:Richard_Milton_Bloch
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gptkbp:numberOfConstituents
|
over 750,000 parts
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gptkbp:numberOfRelays
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3,500 relays
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gptkbp:numberOfSwitches
|
2,000 switches
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gptkbp:operationalPeriod
|
1944-1959
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gptkbp:output
|
electromechanical typewriters
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gptkbp:powerSource
|
electricity
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gptkbp:preservedIn
|
gptkb:Harvard_Science_Center
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gptkbp:significance
|
one of the first programmable digital computers
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gptkbp:speed
|
1 multiplication in 6 seconds
3 additions per second
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gptkbp:successor
|
gptkb:Harvard_Mark_II
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gptkbp:technology
|
electromechanical relays
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gptkbp:usedDuring
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gptkb:World_War_II
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gptkbp:usedFor
|
mathematical calculations
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gptkbp:weight
|
4.5 tons
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gptkbp:yearCompleted
|
1944
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gptkbp:bfsParent
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gptkb:Harvard_University_Science_Center
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gptkbp:bfsLayer
|
5
|