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gptkbp:instanceOf
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gptkb: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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gptkbp:input
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punched paper tape
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gptkbp:length
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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
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gptkb:Grace_Hopper
gptkb:Francis_E._Hamilton
gptkb:Robert_V._D._Campbell
gptkb:Richard_Milton_Bloch
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gptkbp:numberOfConstituents
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over 750,000 parts
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gptkbp:numberOfRelays
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3,500 relays
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gptkbp:numberOfSwitches
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2,000 switches
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gptkbp:operationalPeriod
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1944-1959
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gptkbp:output
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electromechanical typewriters
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gptkbp:powerSource
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electricity
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gptkbp:preservedIn
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gptkb:Harvard_Science_Center
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gptkbp:significance
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one of the first programmable digital computers
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gptkbp:speed
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1 multiplication in 6 seconds
3 additions per second
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gptkbp:successor
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gptkb:Harvard_Mark_II
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gptkbp:technology
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electromechanical relays
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gptkbp:usedDuring
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gptkb:World_War_II
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gptkbp:usedFor
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mathematical calculations
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gptkbp:weight
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4.5 tons
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gptkbp:yearCompleted
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1944
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gptkbp:bfsParent
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gptkb:Harvard_University_Science_Center
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gptkbp:bfsLayer
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5
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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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