It would use magnetic-tape storage to replace punched data cards and printers to list the content of the tape.

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To keep answers constant, a FORBES writer played the role of David Ernest and punched the data into the Quicken programs.

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In a competition between them it took 72 hours to record all the data on to Hollerith's punched cards, which was not vastly faster than the 144 hours and 100 hours taken by the other two machines.

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This kind of microscopic punched card reader and writer, is achieving fantastic data densities.

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These punched cards were the same cards that later were used in computer system handling data feed.

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