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gptkbp:instanceOf
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gptkb:personal_computer
historical computer
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gptkbp:alsoKnownAs
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gptkb:ABC
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gptkbp:category
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gptkb:personal_computer
digital computer
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gptkbp:countryOfOrigin
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gptkb:United_States
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gptkbp:developedBy
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gptkb:Iowa_State_College
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https://www.w3.org/2000/01/rdf-schema#label
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Atanasoff–Berry computer
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gptkbp:influenced
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gptkb:ENIAC
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gptkbp:input
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punch cards
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gptkbp:introducedIn
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1937
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gptkbp:inventedBy
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gptkb:Clifford_Berry
gptkb:John_Atanasoff
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gptkbp:legalStatus
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not patented
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gptkbp:location
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gptkb:Iowa_State_University
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gptkbp:memoryType
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capacitor drum memory
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gptkbp:notableFor
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first electronic digital computer
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gptkbp:numberOfTubes
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about 300
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gptkbp:output
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punch cards
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gptkbp:purpose
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solve systems of linear equations
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gptkbp:restored
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1997
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gptkbp:significance
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gptkb:Honeywell_v._Sperry_Rand_case
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gptkbp:status
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gptkb:prototype
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gptkbp:technology
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binary arithmetic
capacitor memory
regenerative capacitor memory
vacuum tube
punch card input
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gptkbp:weight
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over 700 pounds
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gptkbp:yearCompleted
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1942
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gptkbp:bfsParent
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gptkb:Ivan_Atanasoff
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gptkbp:bfsLayer
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4
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