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gptkbp:instance_of
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gptkb:computer
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gptkbp:built
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gptkb:Harvard_University
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gptkbp:circuit
|
electromechanical circuits
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gptkbp:collaboration
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gptkb:Harvard_University
gptkb:IBM
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gptkbp:components
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gptkb:Mass_Relay
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gptkbp:contribution
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World War II calculations
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gptkbp:data_processing_speed
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limited by technology of the time
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gptkbp:design
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modular design
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gptkbp:designed_by
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gptkb:Howard_H._Aiken
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gptkbp:development
|
1937-1947
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gptkbp:exhibition_location
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gptkb:Harvard_University
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gptkbp:field_of_study
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gptkb:computer_science
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gptkbp:first_operation_date
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1947-06-30
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gptkbp:funding
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gptkb:U._S._government
government grants
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gptkbp:has_documentation
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available in archives
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gptkbp:height
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7 feet
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gptkbp:historical_achievement
|
recognized in computing history
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gptkbp:historical_event
|
demonstrated at Harvard University
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gptkbp:historical_significance
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first large-scale automatic computer in the U. S.
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gptkbp:home_port
|
card readers
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|
https://www.w3.org/2000/01/rdf-schema#label
|
Harvard Mark II
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gptkbp:impact
|
significant in computing history
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gptkbp:influenced_by
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gptkb:Harvard_Mark_I
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gptkbp:input_output
|
punched tape
printed paper
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gptkbp:inspired_by
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earlier mechanical calculators
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gptkbp:is_influenced_by
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subsequent computer designs
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gptkbp:legacy
|
paved the way for modern computers
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gptkbp:length
|
15 feet
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gptkbp:maintenance
|
required skilled technicians
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gptkbp:material
|
metal and glass
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gptkbp:memory_type
|
magnetic drum
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gptkbp:notable_feature
|
automatic operation
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gptkbp:notable_users
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gptkb:military_personnel
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gptkbp:number_of_components
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over 3500
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gptkbp:operating_system
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gptkb:none
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gptkbp:operational_status
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decommissioned
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gptkbp:operational_use
|
controlled laboratory
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gptkbp:power_consumption
|
10 kilowatts
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gptkbp:programming_language
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machine code
manual programming
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gptkbp:ram
|
limited
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gptkbp:reliability
|
high for its time
varied by component type
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gptkbp:storage
|
magnetic tape
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gptkbp:successor
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gptkb:Harvard_Mark_I
Harvard Mark III
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gptkbp:type
|
electromechanical computer
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gptkbp:used_by
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gptkb:United_States_Navy
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gptkbp:used_in
|
mathematical calculations
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gptkbp:user_base
|
scientists and engineers
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gptkbp:user_interface
|
console with switches
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gptkbp:weight
|
5 tons
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gptkbp:width
|
2.5 feet
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gptkbp:year
|
1947
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gptkbp:bfsParent
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gptkb:Harvard_Mark_I
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gptkbp:bfsLayer
|
5
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