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单词 ducod punched card
释义 ducod punched card
[¦dü´kōd ¦pǝncht ¦kärd]
COMPUTER SCIENCE
A punched card that has 12 rows of punching positions in each column, designated 0 through 9 and X and Y, and in which numbers from 0 through 99 are punched as two holes in positions 0 through 9, while digit order or digit duplication is indicated by punching or not punching in positions X and Y.
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