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gptkbp:instance_of
|
gptkb:credit_card
|
|
gptkbp:card_number
|
cardboard or plastic
80 column
|
|
gptkbp:card_reader_type
|
electromechanical
|
|
gptkbp:compatibility
|
gptkb:IBM_mainframe_computers
|
|
gptkbp:data_type
|
binary
|
|
gptkbp:data_usage
|
up to 1000 cards per minute
|
|
gptkbp:design_features
|
modular design
|
|
gptkbp:dimensions
|
30 x 20 x 20 inches
|
|
gptkbp:economic_impact
|
pioneered automated data processing
|
|
gptkbp:end_of_life
|
gptkb:1980s
|
|
gptkbp:historical_significance
|
early data processing technology
|
|
gptkbp:historical_use
|
data entry for census and surveys
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
IBM 2540 card reader
|
|
gptkbp:input_output
|
magnetic tape
punched cards
up to 200 cards
automatic stacking of cards
manual feeding of cards
|
|
gptkbp:input_speed
|
gptkb:fast
|
|
gptkbp:interface
|
gptkb:IBM
|
|
gptkbp:introduced
|
1960s
|
|
gptkbp:involved_technology
|
punch card technology
|
|
gptkbp:legacy
|
punch card systems
|
|
gptkbp:maintenance
|
regular cleaning required
|
|
gptkbp:manufacturer
|
gptkb:IBM
|
|
gptkbp:market_segment
|
business and government
|
|
gptkbp:model
|
2540
|
|
gptkbp:operational_use
|
office or data center
|
|
gptkbp:output_speed
|
gptkb:fast
|
|
gptkbp:powers
|
110-120 V AC
|
|
gptkbp:production_years
|
1960s to 1970s
|
|
gptkbp:reliability
|
high
|
|
gptkbp:resolution
|
up to 200 cards
|
|
gptkbp:storage
|
magnetic tape
|
|
gptkbp:successor
|
gptkb:IBM_1402
IBM 2541
|
|
gptkbp:technology
|
gptkb:card_game
|
|
gptkbp:used_for
|
data input
|
|
gptkbp:user_base
|
large organizations
|
|
gptkbp:user_interface
|
manual controls
|
|
gptkbp:weight
|
approximately 200 pounds
|
|
gptkbp:bfsParent
|
gptkb:System/360_Model_65
|
|
gptkbp:bfsLayer
|
6
|