The usual safeguard against data errors is to have all the data punched twice .

通常防止数据出现错误的措施是把全部数据都穿孔两遍。

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Punch card: card punched with a pattern of holes encoding data for storage and reading.

穿孔卡：依照固定模式打孔，作为代码，贮存和阅读资料的卡。

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The usual safeguard against data errors is to have all the data punched twice.

通常防止数据出现错误的措施是把全部数据都穿孔两遍。

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

CNN: Genesis of the computer

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

FORBES: Bedlam

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.

ECONOMIST: Millennium issue