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Herman hollerith invented it.
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∙ 16y ago
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What did Hermann Hollerith invented?
Hermann Hollerith invented a "mechanical tabulator" that uses punched cards to store data.
Punched - card data processing as invented by whom?
Punched- card data processing was invented ny Herman Hollerith.
What is the name of Herman Hollerith machine?
The main 2 machines that Herman Hollerith invented for the 1890 US census were a manually fed electromechanical card tabulator (for counting items punched on the cards) and a manually fed electromechanical card sorter connected to the tabulator by a cable (for separating cars into categories for later processing on other tabulator/sorter machines to extract more specific information).To support these machines he also invented a manually operated pantograph card punch, to allow a person to transfer the data from the paper census form to a punchcard.
When was the tabulator invented?
1890
When was holleriths tabulator invented?
1000 BC
Why do you think Herman hollerith is considered to be a pioneer in the field of computer?
Because he developed a mechanical tabulator based on punched cards to rapidly process statistics from the 1890 census.
What is punched card?
A punch card are cards with punched holes in them that represent data. You feed them into a (usually) large-scale computer that can accept them.
What is addressing mode in memory management?
punched card
Why did the us gov use a punch card in 1890?
The 1880 census had taken 7 years to complete and the 1890 census was estimated to take 13 years to complete. This was unacceptable, as a census must be done every 10 years as required by the constitution. A means of automating data analysis was needed to reduce the time to complete the census. The punchcard and a card reader connected to a tabulator/counter and a sorter provided this automation. Punchcards could be punched with the data from census forms. A tabulator/counter could count 40 values from the card simultaneously while one lid on the sorter popped up to tell the operator where to put it. Punchcards from the various sorter bins were sent to other tabulator/counter & sorter machines for further processing. Using this new system the basic census results required by the constitution were completed in months instead of years.
What has the author Wallace John Eckert written?
Wallace John Eckert has written: 'Punched card methods in scientific computation' -- subject(s): Punched card systems, Astronomy, History
What has the author Robert Glen Van Ness written?
Robert Glen Van Ness has written: 'Principles of punched card data processing' -- subject(s): Punched card systems
What was the term used for the first paper input medium used in early IBM mainframe computers?
punched card, but they developed that card in 1924 for their electromechanical EAM machines, by modifying a punched card developed in 1890 by Herman hollerith.
