How many columns were on a punch card in 1929?

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asked Jan 4, 2020 211k views

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Dave Haupert · Answer 1 · 2020-01-10T08:58:31+0000

22 columns

The original code used for punched card data recording in the 1890 census had 22 columns with 8 punch positions each (although there was room on the card for a total of 11 punch positions per column).

How many columns were on a punch card in 1929?

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