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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:calculationSpeed
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1 multiplication in 6 seconds
3 additions per second
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gptkbp:category
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gptkb:Harvard_University
gptkb:IBM
gptkb:personal_computer
history of computing
1944 establishments in the United States
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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:exhibitedAt
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gptkb:Harvard_Science_Center
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gptkbp:firstOperator
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gptkb:Grace_Hopper
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gptkbp:height
|
2.4 meters
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|
https://www.w3.org/2000/01/rdf-schema#label
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Harvard Mark I
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gptkbp:influenced
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gptkb:Harvard_Mark_III
gptkb:Harvard_Mark_II
gptkb:Harvard_Mark_IV
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gptkbp:input
|
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:Howard_H._Aiken
gptkb:John_von_Neumann
gptkb:Robert_Campbell
gptkb:Frank_H._Allen
gptkb:Richard_Milton_Bloch
gptkb:W._J._Eckert
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gptkbp:numberOfConstituents
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over 750,000 parts
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gptkbp:numberOfRelays
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3,304
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gptkbp:numberOfSwitches
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2,000
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gptkbp:operationalPeriod
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1944-1959
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gptkbp:output
|
SD card
electromechanical typewriter
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gptkbp:powerSource
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electricity
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gptkbp:programmingLanguage
|
machine code
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gptkbp:significance
|
used during World War II
one of the first programmable digital computers
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gptkbp:successor
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gptkb:Harvard_Mark_II
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gptkbp:technology
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switches
electromechanical relays
clutches
rotating shafts
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gptkbp:usedFor
|
military calculations
scientific calculations
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gptkbp:weight
|
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:Howard_H._Aiken
gptkb:Mark_I_computer
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gptkbp:bfsLayer
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4
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